Start with The Beginner Practice Routine (Piano Lesson) (9 min, Pianote), then Lesson 1: How to Read Piano Music - Year 1 Beginner Piano Course , Unit 1 (9 min, Piano Video Lessons). All 145 lessons here are free, from the teachers' own official uploads. You'll need 88-key weighted keyboard, sustain pedal, keyboard stand and bench (about $540 of kit). The book to keep beside you: Alfred's Basic Adult Piano Course by Willard A. Palmer.