I'll second the Carr book - it is well written and very comprehensive. I would also suggest the cheapest way to get into Polaroids would be to get an older Polaroid camera that uses the correct film type. I picked up a 250 for a buck (shipping was $4) so I was able to start on a fiver. The film however is not as cheap, but the experience is worth the time, just to see if you like it. You'll get much sharper images with the Daylab or a 4x5 holder, but until you know if it's for you, you might do better with the less expensive option...

- Randy