Aaron, I strongly suggest you get a big fat book on PHP and MySQL, AND a slim book on the same topic AND a slim one on database theory and design. Read the thin ones first, from cover to cover. Then start of the thick book (as the thin ones will only give you a few ideas to get started) and read as much of it as possible.

THEN, when you've tried a lot of the examples/exercises in these all books, attempt your project.

I'm not being funny, database theory is a big subject, and it's clear you need a lot more background knowledge to make progress. And that knowledge is locked up in textbooks, not in a few lines of a reply in a forum.

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