We just added a link to our New to Gluten Free post.
Eating Gluten Free on a Budget — Jessica of wtf!Celiac has put together a great list of tips for eating well (and gluten free) without breaking the bank. Her point about eating gluten free for all meals if you have celiac/gluten sensitivity cannot be stressed enough.
This is really a must read post covering:
Being gluten free for life
Foods that are naturally gluten free
and a whole bunch of cheap and easy gluten free meals and snacks