Oh, I also have one of these, which has been my main guitar for a while:
http://www.imuso.co.uk/ProductDetail.asp?StockCode=EG01025
NP mate, only too happy to help. I'm not bad on the theory side of things (largly thanks to the "CAGED" method of remembering things).
Chords are made up of at least 3 notes of the scale of the partucular key, not to difficult really. Then you add and change any of the notes to get your dufferent chords in that key. I still have real problems remembering stuff. lol
Actually, moving between chords using common notes (or modulation) is very easy. You just have to remember which notes are common to which chords.