Hi! Because I would like to focus on getting my cat-specific info and theories up as soon as possible, I am skipping the intro temporarily.
Instead, if you need a primer, I highly recommend http://www.doggenetics.co.uk/! Reading the "Basic genetics terms" and "Breeding" pages should be a suitable introduction. These pages are one of the best introductions to genetics I've come across!
I will have an explanation of my own up eventually, but since it requires some illustrations and a lot of editing to make sure it's as accessible as possible, it may be a while!