Solia guides you through The EVM Core. Standing in the way: The Reentrancy Reaper — every mistake this lane teaches you to avoid. Protocol internals, EVM bytecode, advanced Solidity and battle-tested contract patterns.
All 48 lessons below are free, need no signup, and each one opens as a comic issue with a live try-it sandbox, a task list that pays XP, and a narrator that reads it aloud. Progress is stored in your own browser — nothing is uploaded anywhere.