I can play the Entertainer by Joplin, and I can construct chords and figure out inversions, but I'm a poor sight reader. I familiar with some theory and I've played the guitar for about 7 years, but chording and playing a melody at thesame time is so much different. For thisreason I feel that the piano is the master of all instruments, and I want to learn how to compose also. I just need a good starting point.