Food Storage, the Obsession

So does anyone have a good food storage inventory system or ideas for one? I think that I started one for my mom when I was in high school. I never finished it. I didn't realize how much she needed it, or I guess I would have. I was a little bit clueless, until about a year ago, (that has improved some, but still working on it) and didn't understand the system that I was making her. I got confused about half way through, I abandoned the project. Wow, how many of those do I have lying around? Unfinished projects, that is.