
When I was a teenager, there was about a year that my mother and I had nothing to eat but potatoes because we were trying to make ends meet. That is when I decided I was going to do what I could to figure out a way we could afford a bit more variety in our food as well as being able to have the heat set above 58 degrees in winter.
That's when I started reading books like The Complete Tightwad. Although this book has advice from 20+ years ago, much of it is still quite useful, and one I would recommend to be in any penny pincher's library. I still read my copy from time to time, usually getting it out every two years or so for a refresher course to see if I'm still doing everything I can -- or even if I can implement something new.