As far as track specific information, trackpedia is a good resource. The site's participants are from all over the world and all levels of driving skill and participation. Visit the track specific forums for some good information on a particular track.

Marty, with all due respect, most of trackpedia driving guides are less than good, and some are just dead flat wrong in the presentations that are there. I have not read them all, and certainly would not comment on the ones that are of tracks I have not driven..........but of the ones that I have, they are pretty much universally junk. It is a great concept, but GIGO rules there right now. Perhaps in time it will evolve to being trustworthy, but the most important, and potentially dangerous, element is presently just a published liability.