Get yourself some dog books and start reading!
Dogwise has reading lists.
http://www.dogwise.com/Features/index.cfm

Required reading for dog owners:
Don't Shoot the Dog
http://www.dogwise.com/ItemDetails.cfm?ID=DTB116
Culture Clash
http://www.dogwise.com/ItemDetails.cfm?ID=DTB464
The Other End of the Leash
http://www.dogwise.com/ItemDetails.cfm?ID=DTB745
Power of Positive Dog training
http://www.dogwise.com/ItemDetails.cfm?ID=DTB723
SCAREDY DOG! UNDERSTANDING AND REHABILITATING YOUR REACTIVE DOG
http://www.dogwise.com/ItemDetails.cfm?ID=DTB799

Check out Karen Pryor's clicker training page
http://www.clickertraining.com/home/

Check Shirley Chong's page
http://www.shirleychong.com/index.html