Start with Create a Design System with Figma - Full Course (459 min, freeCodeCamp.org), then The Figma 2021 Crash Course by Example (72 min, DesignCourse). All 644 lessons here are free, from the teachers' own official uploads. You'll need laptop stand, noise-cancelling headphones, second monitor and a few more basics (about $270 of kit). The book to keep beside you: Don't Make Me Think by Steve Krug.