Set a clear goal for why you want to learn piano
Get a keyboard or piano with weighted keys if possible
Learn the names of the keys
Learn proper hand position
Learn basic music theory
Practice scales and simple exercises
Learn to read sheet music
Start with very easy songs
Practice slowly and accurately
Use a metronome
Practice consistently every day
Focus on one skill at a time
Play hands separately at first
Repeat difficult sections
Learn chords and chord progressions
Train your ear by listening and playing back notes
Record your practice to track progress
Take lessons from a teacher or online course
Stay patient and keep practicing