QUESTION 1: How do I get info on varieties and colours?
ANSWER: Visit a lot of guinea pig shows. Also there is some info on the Internet. You could also visit Swedish standard breeds and Eva's Unusual Cavy Colours and Varieties Page
QUESTION 2: What books should I read to learn about piggy genetics?
ANSWER: The "Colour Inheritance in Small Livestock" by Roy Robinson. And "Colour Genetics of The Cavy" by Catherine Whiteway. These might be hard to obtain but try the English Cavy Club.
Booklets - about guinea pigs - in Swedish: Booklets for sale.