01
Cryptography Foundations
Hash functions, public-key pairs, and why "not your keys, not your coins" is engineering, not slogan.
After: you can tell custody arrangements apart by design, not branding.
02
Consensus & Networks
Proof of Work vs. Proof of Stake, finality, forks — how agreement happens without a boss.
After: you can read a chain's security model instead of trusting a whitepaper.
03
Smart Contract Security
Reentrancy, oracle manipulation, approval risks — the classics, explained with real incidents.
After: you know which questions to ask before you sign a transaction.
04
Layer2 & Scaling
Rollups, validiums, data availability — what L2 actually inherits from L1 and what it doesn't.
After: you can compare bridges and rollups on their real trade-offs.
05
Market Cycles
Liquidity waves, narrative rotation, on-chain indicators — a calm look at where euphoria comes from.
After: you can locate "now" in a cycle without pretending to know the top.
06
Risk Budgeting
Sizing rules, drawdown math, the cost of ruin — why surviving beats optimizing.
After: you write your risk rules down and actually follow them.