You can spend about ten bucks on a beginning method - maybe Alfred's or such to get your fingers going and knowing what they should do. It's actually a very good series when it comes down to it, but you really can't go wrong with any of them.
After that, you begin with classical repertoire. http://www.kjos.com
<--look under 'Keith Snell Piano Repertoire'
You could honestly just buy the "Beginning Piano Repertoire" and "Beginning Piano Technique" book, and ignore the method book altogether too. That comes to around $10 as well. Once completing those, the series breaks off into four books: Baroque and Classical (essential at early levels), Romantic and Contemporary (not so essential at early levels), and Etudes (mixed reviews on their value - I happen to like them), and Fundamentals of Piano Theory.
Don't think you'll get to Chopin without doing any theory. The amount you learned in band and such is not really enough for that (trust me, I know - clarinet and percussion were my life in high school).
If you have an interest in other styles, the same publisher has hired comtemporary artist to write in the styles of Jazz, Musicals, New Age, etc etc etc - and they're fun little pieces, I assure you, as my students tend to love those books the most! The more you do at any level is better, but don't be daunted by all the pieces in the books. You don't need to do them ALL at every level.
Suzuki will move WAAAAAAAAAA (deep breathe) AAAAAAAAY too quickly. You need something more progressive. Keith Snell is one, which I like, but there are many others:
Succeeding with the Masters
First Impressions (said to be an intermediate method, but I've seen it used as a beginners method with adults after a few short hand-training weeks)
I think you're best investment would be meeting with a teacher, if even once a month. That will get you learning quickly and effectively (hoping the teacher is good, of course).
Let us know more specifics and we can most certainly point you in more directions.