- An Introduction to Sheet Music and Theory
- Learning Basic Music Theory the Easy Way
- Music Theory and Improvisation
Make sure you read them in order (unless you know the information already, of course). You'll need to know the information from the first to read the second, and the second to read the third. They're worth a look. I assume anybody here would know most of the information in the first article, but you should probably take a look anyway. If you like them, leave a comment here or on the article itself (I would prefer the lattar).