I suggest checking out Zen Habits. Albert (I believe is his name) has a lot of great posts about minimalism and living frugally. Here's a good article to start out with:
The Cheapskate Guide: 50 Tips for Frugal Living | Zen Habits
I'd also recommend this article:
Confessions of a Bottom Feeder, Part 1: When Frugality Becomes a Survival Skill
Best of luck to you!