Web3 & Blockchain

Zk Rollups

Blockchain Fundamentals: How Distributed Ledgers Work

Learn blockchain fundamentals including blocks, chains, consensus mechanisms, mining, and how distributed ledger technology powers cryptocurrencies and decentralized applications.

Solidity Data Types, Mappings and Structs

Learn Solidity data types including value types, reference types, mappings, structs, arrays, and storage locations (storage, memory, calldata) for efficient contract development.

Solidity Functions, Modifiers and Events

Learn Solidity functions including visibility, modifiers, events, error handling with require and revert, and function overloading for secure smart contract development.

Smart Contracts: Design Patterns and Best Practices

Learn smart contract design patterns including ownership, access control, pull-over-push, emergency stop, and upgradability patterns for building secure and maintainable contracts.

Truffle and Ganache: Local Blockchain Development Suite

Learn Truffle and Ganache for local Ethereum development including project setup, migrations, testing, debugging, and deploying contracts from a local blockchain to production.

Remix IDE: Browser-Based Solidity Development

Learn Remix IDE for Solidity development including the editor, compiler, debugger, testing, and deploying contracts directly from your browser without local setup.

Web3.js: Interacting with Ethereum from JavaScript

Learn Web3.js including connecting to Ethereum nodes, reading contract state, sending transactions, listening to events, and building JavaScript dApps that interact with smart contracts.

ethers.js: Modern Ethereum JavaScript Library Guide

Learn ethers.js including providers, signers, contract interactions, event filtering, utilities, and building production dApps with the most popular Ethereum JavaScript library.

ERC-20 Tokens: Creating Your Own Cryptocurrency

Learn the ERC-20 token standard including total supply, transfers, allowances, and deploying your own fungible token on Ethereum with OpenZeppelin contracts.

NFTs (ERC-721 and ERC-1155): Minting and Marketplaces

Learn NFT development including ERC-721 and ERC-1155 standards, minting, metadata, IPFS storage, building a marketplace, and deploying NFT collections to Ethereum.

dApp Development: Building Full-Stack Decentralized Applications

Learn full-stack dApp development including smart contracts, frontend integration with React, wallet connection, transaction management, and deploying to production.

MetaMask Integration: Connecting Wallets to Your dApp

Learn MetaMask integration including wallet connection, account management, network switching, transaction signing, and handling common MetaMask user interactions in your dApp.

Uniswap and AMMs: Automated Market Makers Explained

Learn automated market makers including Uniswap v2 and v3, constant product formula, concentrated liquidity, fee tiers, and building your own AMM for learning.

Layer 2 Scaling: Rollups, Sidechains and State Channels

Learn Ethereum Layer 2 scaling solutions including optimistic rollups, zk-rollups, sidechains like Polygon, state channels, and how they scale blockchain transactions.

IPFS: Decentralized Storage for Web3 Applications

Learn IPFS for decentralized file storage including content addressing, pinning, IPFS gateways, integrating IPFS with smart contracts, and using IPFS for NFT metadata.

Oracles and Chainlink: Connecting Blockchains to Real-World Data

Learn blockchain oracles including Chainlink for price feeds, verifiable randomness, and connecting smart contracts to external APIs, data, and payment systems.

Smart Contract Security: Auditing and Common Vulnerabilities

Learn smart contract security including reentrancy, overflow, front-running, access control issues, and using tools like Slither and MythX for auditing your contracts.

DAOs: Decentralized Autonomous Organizations Explained

Learn DAOs including governance tokens, voting mechanisms, treasury management, and building a DAO with smart contracts for community-owned organizations.

ENS: Ethereum Name Service for Human-Readable Addresses

Learn Ethereum Name Service including registering domains, resolving names, subdomains, reverse resolution, and integrating ENS into dApps for better user experience.

Cross-Chain Bridges: Blockchain Interoperability Guide

Learn cross-chain bridges including trusted and trustless bridges, wrapped tokens, liquidity networks, and how different blockchains communicate and transfer assets between each other.

MEV: Miner Extractable Value in Blockchain

Learn MEV including front-running, sandwich attacks, arbitrage, liquidations, and how MEV affects blockchain users with strategies for protection and ethical extraction.

Building a Crypto Wallet: Architecture and Security

Learn crypto wallet development including key management, HD wallets, transaction signing, hardware wallet integration, and security best practices for non-custodial wallets.

DeFi Protocols: Aave, Compound and MakerDAO Deep Dive

Learn major DeFi protocols including Aave for lending, Compound for money markets, and MakerDAO for stablecoins with practical examples of interacting with each protocol.

Web3 Introduction -- The Decentralized Web Explained

Learn what Web3 is and how blockchain powers the decentralized internet where users control their own data, identity, and assets without intermediaries.

Blockchain Recap -- Core Concepts for Web3

Learn the essential blockchain concepts behind Web3 including blocks, hashing, consensus, immutability, and how they form a trustless peer-to-peer network.

Ethereum and the EVM -- Smart Contract Engine

Learn how the Ethereum Virtual Machine executes smart contracts, processes transactions, and enables decentralized applications through a global state machine.

Consensus Mechanisms -- PoW, PoS Explained

Learn how Proof of Work, Proof of Stake, and other consensus algorithms secure blockchain networks and achieve agreement across decentralized validator nodes.

Decentralization in Web3 -- Why It Matters

Learn what decentralization means in Web3, how distributed networks eliminate single points of failure, and why it provides censorship resistance and trust.

Web3 vs Web2 -- Key Differences Compared

Learn the key differences between Web2 and Web3 including data ownership, platform architecture, user identity, monetization, and who controls the network.

Cryptoeconomics -- Incentives in Web3 Networks

Learn how cryptoeconomic incentives align participant behavior in decentralized networks using tokens, staking, slashing, and game-theoretic mechanism designs.

dApp Architecture -- Building Decentralized Apps

Learn the architecture of decentralized applications including frontend, smart contracts, wallet integration, and how they communicate with blockchain networks.

Ethers.js -- JavaScript Library for Ethereum

Learn how to use the Ethers.js library to connect frontend applications to Ethereum, send transactions, read contract data, and listen for blockchain events.

Web3 with React -- Building dApp Frontends

Learn how to build React-based dApps with wallet connectors, context providers, and hooks that manage blockchain state across your frontend components.

Wagmi and ConnectKit -- Modern Web3 React Hooks

Learn how to use Wagmi and ConnectKit to rapidly add wallet connections, contract reads, and transaction management to any React dApp frontend project.

Hardhat Setup -- Ethereum Development Environment

Learn how to set up Hardhat for Ethereum development including compiling Solidity, running test networks, deploying contracts, and debugging with traces.

Smart Contract Deployment -- Testnet to Mainnet

Learn how to deploy smart contracts to Ethereum testnets and mainnet using Hardhat, verify source code on Etherscan, and manage upgradeable deployments.

dApp Testing -- End-to-End Contract Verification

Learn how to test dApps with Hardhat, Chai assertions, Waffle matchers, and local forked mainnet environments for reliable contract verification workflows.

MetaMask Integration -- Wallet for Your dApp

Learn how to integrate MetaMask into your dApp for user authentication, transaction signing, network switching, and managing multiple Ethereum accounts.

WalletConnect -- Cross-Device Wallet Communication

Learn how WalletConnect enables secure dApp-to-wallet communication via QR codes and deep links, supporting mobile wallets and cross-device authentication.

Account Abstraction -- ERC-4337 Smart Wallets

Learn how ERC-4337 account abstraction enables smart wallets with social recovery, batch transactions, gas sponsorship, and custom security rules for users.

ENS Domains -- Ethereum Name Service Guide

Learn how Ethereum Name Service maps human-readable names to addresses, enables decentralized websites, and simplifies crypto payments and identity management.

Sign-In with Ethereum -- Web3 Authentication Standard

Learn how Sign-In with Ethereum provides standard off-chain authentication using cryptographic signatures, replacing traditional passwords with crypto keys.

Multi-Signature Wallets -- Shared Account Security

Learn how multi-signature wallets need multiple owner approvals for transactions, securing DAO treasuries, project funds, and organizational assets on Ethereum.

Social Recovery Wallets -- No More Seed Phrases

Learn how social recovery wallets let users regain access through trusted guardians, eliminating seed phrase risk while maintaining full self-custody of assets.

Solidity Basics -- Smart Contract Programming

Learn Solidity programming fundamentals including data types, functions, modifiers, events, and inheritance to write secure Ethereum smart contract code.

Solidity Design Patterns -- Best Practices

Learn common Solidity design patterns like Factory, Proxy, Pull-over-Push, Access Control, and Emergency Stop for building robust and upgradeable contracts.

Gas Optimization -- Lower Ethereum Transaction Costs

Learn Solidity gas optimization techniques including storage packing, calldata usage, unchecked math, and gas golfing to reduce deployment and execution costs.

Smart Contract Security -- Preventing Vulnerabilities

Learn smart contract security best practices to prevent reentrancy, integer overflow, frontrunning, and access control vulnerabilities in your Solidity code.

Blockchain Oracles -- Connecting to Real-World Data

Learn how blockchain oracles like Chainlink bring real-world data onto Ethereum, enabling smart contracts to access prices, randomness, and external APIs.

Upgradeable Smart Contracts -- Proxy Patterns

Learn how to make smart contracts upgradeable using proxy patterns, transparent and UUPS proxies, while managing storage layout across contract versions.

Foundry -- Fast Solidity Development Framework

Learn how to use Foundry for blazing-fast Solidity compilation, fuzz testing, cheatcodes, and on-chain interactions directly from the command line interface.

IPFS Basics -- Decentralized File Storage

Learn how IPFS uses content-addressed storage to create a decentralized file system where files are identified by their cryptographic hash rather than location.

IPFS Hosting -- Deploy Sites on Decentralized Web

Learn how to host websites and apps on IPFS using IPNS, DNSLink, and pinning services like Pinata and Crust for truly persistent decentralized web storage.

Filecoin -- Decentralized Storage Marketplace

Learn how Filecoin provides a decentralized storage marketplace with crypto-economic incentives, proofs of replication, and retrievability for long-term data.

Arweave -- Permanent Decentralized Storage

Learn how Arweave provides permanent one-pay-forever storage using blockweave technology, enabling truly immutable and censorship-resistant data archiving.

Web3.Storage -- IPFS and Filecoin Uploads Made Easy

Learn how to use the web3.storage service to upload, retrieve, and manage files on IPFS and Filecoin with a simple JavaScript client library for your apps.

Ceramic Network -- Mutable Data Streams for Web3

Learn how Ceramic Network enables mutable, user-controlled data streams for decentralized identity, user profiles, and dynamic content on Web3 applications.

Content Addressing -- How CIDs Work in Web3

Learn how content addressing uses cryptographic hashes to verify data integrity, enable deduplication, and create immutable verifiable links for Web3 storage.

DeFi Basics -- Decentralized Finance Explained

Learn how decentralized finance uses automated market makers, liquidity pools, lending protocols, and token incentives to replace traditional banking systems.

Automated Market Makers -- Uniswap Deep Dive

Learn how Automated Market Makers use constant product formulas to provide decentralized trading, enabling permissionless liquidity and token swaps on-chain.

DeFi Lending and Borrowing -- Aave and Compound

Learn how DeFi lending and borrowing protocols like Aave and Compound enable overcollateralized loans with variable interest rates and flash loan features.

Yield Farming -- Earning Returns in DeFi

Learn how yield farming generates returns by supplying liquidity, staking tokens, and participating in incentives across DeFi protocols and platforms.

Stablecoins -- Price Stability in Decentralized Finance

Learn how stablecoins maintain price pegs using fiat reserves, crypto overcollateralization, or algorithmic mechanisms for reliable DeFi value storage.

Token Economics -- Designing Web3 Token Systems

Learn how token economics designs incentive structures through supply schedules, vesting, staking rewards, governance rights, and utility in Web3 protocols.

Layer 2 Scaling -- Rollups and Sidechains

Learn how Layer 2 solutions like zk-rollups and optimistic rollups increase Ethereum transaction throughput while inheriting its security and decentralization.

NFT Basics -- Non-Fungible Tokens Explained

Learn what NFTs are, how ERC-721 and ERC-1155 standards define unique and semi-fungible tokens, and their use in digital art, gaming, and collectibles markets.

ERC-721 -- Creating NFT Smart Contracts

Learn how to create and deploy ERC-721 NFT contracts with metadata URIs, minting functions, royalties, and enumeration for digital art and collectible projects.

ERC-1155 -- Multi-Token Standard for Gaming and NFTs

Learn how ERC-1155 multi-token standard combines fungible, non-fungible, and semi-fungible tokens in a single contract for efficient game asset management.

Build an NFT Marketplace -- Full Stack Guide

Learn how to build an NFT marketplace with listing, bidding, buying, and royalty features using Solidity smart contracts and IPFS metadata storage solutions.

DAO Structure -- How Decentralized Autonomous Organizations Work

Learn how DAOs are structured with governance tokens, proposal systems, treasury management, and voting mechanisms for effective decentralized decision-making.

DAO Voting -- On-Chain Governance Mechanisms

Learn how DAO voting systems implement token-weighted voting, quadratic voting, delegation models, and quorum thresholds for effective community governance.

On-Chain Governance -- Managing Protocol Upgrades

Learn how on-chain governance allows token holders to propose, debate, and vote on protocol changes through transparent and automated execution systems.

Web3 Career Roadmap -- From Beginner to Blockchain Developer

Learn a step-by-step career roadmap for Web3 development from blockchain fundamentals to smart contracts, dApps, DeFi, and advanced security auditing skills.

Solana Development -- High-Performance Blockchain

Learn how Solana achieves high throughput with Proof of History consensus, its account-based programming model, and building programs using the Rust framework.

Rust for Web3 -- Blockchain Development with Rust

Learn how to use Rust for Web3 development including Solana programs, Ethereum clients, and high-performance blockchain infrastructure and tooling for dApps.

The Graph -- Indexing Blockchain Data for dApps

Learn how The Graph indexes blockchain data by using subgraphs, enabling fast GraphQL queries for dApps without running your own archive node infrastructure.

Web3 Security -- Auditing Smart Contracts

Learn Web3 security auditing skills including vulnerability detection, common attack vectors, and reviewing smart contracts before production deployment.

Cross-Chain Bridges -- Interoperability in Web3

Learn how cross-chain bridges and interoperability protocols transfer assets and data between different blockchains for a seamlessly connected Web3 ecosystem.