I've actually thought about making a website that is specific to the photo booth business that includes "how to" articles, FAQ's, reviews, and a forum, but I've just been so busy getting my business up and running in addition to my full time job, that I have put it on the back burner.
In the mean time, these forums are probably the best place for info, which is why I check out the board at least once a day.
Snapshot Photo Booth Rentals - Louisville's best photo booth rental company.
http://www.photoboothtalk.com - Discuss everything related to photo booths, from building the booth, to printers, to advertising your business.