I'm at the moment reading
This which is a discussion of Kunstler's blog. He's a bit tiresome for me after a while, as some point out (repetitive literary devices); also he has some dubious political leanings/theories/notions; but the Long E is one doozy of a read for someone new to the topic. That and lifeaftertheoilcrash.net will be a real kick in the head for anyone new to the subject.