I found a good resource booklet (PDF) from the 2 Keto Dudes website — The Ketogenic Diet in a Nutshell — at booklet.2keto.com.
2 Keto Dudes are Carl Franklin and Richard Morris, and their website is at www.2ketodudes.com. They do a weekly podcast that I have been listening to for a while and it is really good. Whether you are just curious about the ketogenic diet or already on board with it, the podcast is very informative.
Carl and Richard also recently launched a discussion forum at www.ketogenicforums.com and it is another good resource to check out. Lots of good information and conversations happening there.