Hello everybody.
I am 17 years old and most of my day is devoted to studying. I can read music and play the easier piano pieces and I wish to learn about music theory to be able to improvise and play out the various melodies running in my head. Presently I possess a very poor knowledge of music theory and it feels like a big handicap; particularly because I play piano for leisure and want to be able to express myself; and also because I am a terrible singer
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I have a Casio Celviano AP-420 in my room, an internet connection, but no money to spend. Is there free material out there that you would recommend? I can spend half an hour to an hour everyday playing piano.
First, thank you for being straightforward about who and what you are, and or not (not a negative), as a pianist.
Secondly, one of, if not, the most popular theory book sold in music stores is "Edlly's, Music Theory for Practical People." It is written by Ed Roseman, who has geared this great book, in my opinion, for pianists just like you.
Further, it is as people friendly, with high quality illustrative cartoons, as you can get. And, it is as compositionally sound as any of the other recommendations that have been made.
This should go a very long way to solving your problem. And, my compliments again for having the courage to broach the question.