Here are some books that are recommended for training. Some also address how dogs learn.
Don't Shoot the Dog- Karen Pryor
Reaching the Animal Mind- Karen Pryor
Click to Calm- Emma Parsons
Really Reliable Recall- Leslie Nelson
The Other End of the Leash- Patricia McConnell (all of her other books are great too)
The Culture Clash- Jean Donaldson
Also go to www.dogwise.com for additional books and to purchase those mentioned. There are also dvds, toys, and other dog related items for sale.