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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

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Last updated 2026-10-01

Questions, problems, refund requests or a mistake in a lesson: write to mike@russo-dev.com. A person reads every message, usually within two business days.

Found a mistake in a question? Logged-in learners can also use the report link on the question itself, which tells us exactly where the problem is.