Online guinea pig resources?

Hi there! I've kept guinea pigs as pets for the last ten years. Until now I've adopted guinea pigs from shelters, but I live in a situation where I have more time and room and my two boys passed away recently. I've always dreamed of showing my piggies. I don't live in the US or UK but I've found resources about breeds and a few pages regarding showing and standards in my country, but I know I have a lot to learn. Advice, information on showing and links to useful pages would be much appreciated!

I currently have found ARBA and ACBA as well as some Czech pages. However I'd like more information on genetics, showing and accepted colors.

Thanks! :)