"Positive Perspectives: Love Your Dog, Train Your Dog" by Pat Miller. Similar to her book "Power of Positive Dog Training", but much more puppy stuff. As for websites, this is a good one!
5 weeks is pretty young to learn much of anything except what to chew and what not to chew, where to potty and where not to potty, how different people look and smell, how different places look and smell., and not to bite people. Fetch can wait a few weeks.
