freeCodeCamp dropped a 12-hour Claude Code course and it's 100% free.
Covers everything from zero to hero. There's an optional certificate at the end if you want proof you did the work.
I've been using Claude Code daily for months. If you've been dabbling but want to go deeper, this is the best structured resource I've seen. You don't need to pay $2000 for a bootcamp when this exists.