Here are some of the books I’ve found most useful in clicker training Kara.
Clickertraining: The 4 Secrets for Becoming a Supertrainer
Agility Right from the Start by Eva Bertilsson and Emelie Johnson Vegh
Videos and descriptions of some of the exercises in the book:
Clicker Training for Obedience by Morgan Spector
Learning Games by Kay Laurence
How Dogs Learn by Mary Burch and Jon Bailey
Reaching the Animal Mind: Clicker Training and What It Teaches Us About All Animals by Karen Pryor