One of the best blogs out there supporting Classic Fantasy, is a blog written by Peter Webster. I discovered Peter's blog almost immediately after Classic Fantasy released, and for about a year now, he has been coming up with great stuff in support of the game. This includes a history of d100 gaming, detailed examples of Classic Fantasy character creation and adventuring, new creatures and player races, etc. His writings are so good and insightful, that I asked him to write Classic Fantasy's first official adventure; M1: Terror of Ettin Marsh, which is due to release very soon. The best part is that Peter is so humble that he didn't answer the first call for adventure submissions because he didn't feel he would be 'good enough'.
Blogs can sometimes be hard to navigate, but a short while ago, Peter made an 'index' page for his Classic Fantasy stuff, which I'm linking to here...
If you have any interest in Classic Fantasy, or are curious about it in any way, I suggest you start there. But don't be afraid to jump around, Peter is a gamer, and his interests are varied and many.