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Free public beta until December 4, 2026: every course is open, no card needed. After that, the first chapter of each course stays free and full access is a one-time $39 ($19 for up to 100 founding members chosen for helpful feedback). Your progress is kept. How the beta works

bit

One binary digit, 0 or 1.

A bit is the smallest unit of information, a single 0 or 1. Bits in a value are numbered from bit 0, the least significant (worth 1), upward.

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