Wow, lots of info! I've bookmarked the Paul C. Buff website for their tips and products, I also really like the idea of using a 645 back to minimize costs while learning. After doing more reading it seems like strobes will be best suited to my goals and I'll be picking up a flash meter. The only digicam I have right now is my iphone so I'll have to go the instant route for test shots and take lots of notes while using roll film. I do have a few questions about the RB regarding polaroids/fujiroids and other stuff but I'll save those for the equipment forum. Thanks for the help everyone!

- Justin