love king arthur's site and thefreshloaf.com that PP mentioned.
I found the fresh loaf's primer helpful,
http://www.thefreshloaf.com/lessons/yourfirstloaf

and love using my mixer to make pizza dough. (we have it once a week!)
http://www.thefreshloaf.com/recipes/pizza

also a fan of, for recipes (heavy on baking)--she has my fave choc chip recipe--
http://smittenkitchen.com/