Whether you are interested in learning or want to practice piano professionally. Suggest looking for information first.
For example, if you want to play a song you like, you should first check the difficulty of the song, search the staff or notation of the piano music online to see if it is difficult, and then start practicing.
Step 2: Read music.
Generally, any teaching now is a staff. If you read this kind of books for self-study, please learn to read the basic staff.
The advantage of reading the staff is that all the notes are in the fixed key position of the piano, which is unique.
Step 3: Prepare for piano practice.
This should be combined with yourself, whether to prepare for training institutions or online self-study.
If you are studying offline, the training institution has a place to practice the piano, so you don't have to buy it yourself. If you are self-taught online, please buy an electrical steel online.