I think the sentence below could be better put. In particular, I wonder whether 'practical' and 'intellectual' are the best 'headings' (?) for the broad areas of musical study (explained below).
When you start to play the piano there are many things you will need to learn - both practical and intellectual.
Practical study - activities that make a piano player better able to control their fingers and hands.
Intellectual study - activities that enhance a piano player's understanding of rhythm, harmony, melody, notation.