Tami Cowden's great book, Heroes and Heroines: Sixteen Master Archetypes, is amazing but she gives away some of her secrets on her website: www.tamicowden.com/archetypes.htm
Caroline Myss has another great site for archetypes. It isn't a writer website - she teaches how to use archetypes in life - but it rocks as a resource for character arcs. http://www.myss.com/free-resources/sacred-contracts-and-your-archetypes/appendix-a-gallery-of-archtypes/
Alicia Rasley has two books on my 'favorite' list, The Power of Point of View and The Story Within series of workbooks. Here are a couple of her articles on character:
This particular site (fictionfactor) has a WHOLE bunch of great articles - I just gave you a few that I really like.
Here's one for villains!
Character interview sites: