Originally Posted by: shahnenhey i already have i basic understanding of music theory (i read the complete idiots guide to music theory:second edition) is it worth it to go more advanced and get the book harmony by waltor piston? i play rock and roll and i wanna b the best i can possibly be. thanks

I personally believe one should only invest time into studying if you will for a fact apply the new knowledge because otherwise it will be dormant knowledge and you won't benefit from the extra information your brain now holds.

If you are looking to become a better another possibility is by developing and refining what you already have and perfecting that.