You can do a Google search on home coffee roasting, or green coffee beans and get lots of sites. I personally have settled on www.sweetmarias.com. I bought my home roaster there (the Fresh Cup roaster) and I buy my beans through them. I really like the wealth of information on their site and the fact that their buyer personally travels to a lot of the countries he buys from in order to cup the lots before he buys them. His notes on each variety are very educational, and his roasting notes are extremely helpful.
I got my brother into home roasting last year and he has since got several other people started, and I think I may have "started something" with a few friends from church. I've been home roasting for about 3 years now, and I love it.