I will not recommend specific sites, nor do I recommend BASE jumping. I am posting these articles because the lessons that have been learned about BASE have cost us dearly. I do not want to see anyone hurt or killed because they were unknowingly re-inventing the sport. In case, you're wondering about my background in BASE, I have made 55 BASE jumps, mostly freefalls from under 500 ft, from a variety of sites. I make and sell BASE accessories, e.g., pilot chutes, bridles, mesh sliders, etc., and I have been on the Bridge Day staff for the past few years.
Nobody is the ultimate authority.
BASE is an extremely dangerous activity. There is a lot more to BASE than any series of articles can present. Use the information only as a starting point. Here are the specifications on Precision Aerodynamics' Super Raven. They come directly from George Galloway.