Chapters has a good selection of cookbooks for different lifestyles including vegetarian - check out their discount section too- they sometimes have different cookbooks under $20.00.
Check out your local library for books on the subject and their is a book thread on the veggie forum with recommended reads

Magazines I enjoy:
Vegetarian times
Veggie Life
Organic Style
Natural Health
Here are a few sites that might be useful to you:
www.thesavvyvegetarian.net,
www.vrg.org,
www.vegetariantimes.com and
vegetarian.about.com
www.vegparadise....I got this one from a 3FC member named VOW- she writes a colum called"Using your bean" for this on-line zine. It's free and has a lot of good articles and information.