My absolute favorite frugal resource is The Complete Tightwad Gazette by Amy Dacyczyn. This is the book that started the whole thing for me. Although the organization is a little odd (it is based on the original newsletters that were authored in the 80’s, and the book is arranged by season rather than topic-good thing the index is very comprehensive) It is a very readable book, and should be required reading for any frugalite. Some of it is very extreme, and will only appeal or pertain to a very select few, but much of it is applicable to anyone, and regardless of your circumstance it will make you think about things in new and different ways. About every 2 years I reread the entire thing. I constantly resource the “Muffin” recipe (which tells you all the proportions so you can use anything you have on hand to make muffins) the “Quiche” recipe (same proportion type formula) and the recipe for Cuban bread.
Not Just Beans by Tawra Kellam is another good resource-it is full of easy, tasty, inexpensive recipes as well as plenty of frugal tips. If you don’t know where to start to pare down your shopping list and start cooking from scratch, this is a good place to start.