What do you want to learn?

Learn Python by doing — run real code in your browser, one bite-sized step at a time.

Learn programming fundamentals with JavaScript through runnable examples, precise feedback, graded practice, section projects, and a terminal-style capstone.

Master modern React through rendering mental models, TypeScript, accessible interaction, routing, server state, React 19, testing, production engineering, and a portfolio-quality capstone.

Evaluate blockchain-based financial products, digital money, payment lifecycles, tokenized assets, institutional risks, and responsible client recommendations.

A practical Web3 course for experienced Web2 developers, with no prior blockchain knowledge assumed. Twenty-one chapters take you from consensus and wallets through Solidity contracts, testing, tokens, frontend integration with wagmi and viem, payments, oracles, DeFi, Bitcoin's UTXO model and Lightning, L2 deployment, a full Solana deep dive, and a security auditing mindset. Every chapter mixes mental models with runnable code, a decision gate, and a hands-on checklist. All work happens on testnets; no real funds required. It ends with a capstone: a deployed full-stack testnet dApp with a written security self-review, which earns the certificate.