Start with The 2019 UI Design Crash Course for Beginners (97 min, DesignCourse), then The UI/UX Crash Course for 2023 - Learn UI/UX Design (78 min, DesignCourse). All 579 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.