I don't really have favorite sites, but I have favorite vegan books.
Vegan With A Vengeance (there is also a website you can visit http://www.theppk.com/books/vegan-with-a-vengeance/
The Complete Book of Raw Food
The Vegan Table
La Dolce Vegan
Student's vegetarian cookbook (this saved me when I was in college, of course somethings I had to alter
I guess for my sites:http://vegweb.com/