where can i find useful information on BSP Trees besides the BSP Tree FAQ (i''m quite new to this topic) Form follows function

Some pointers..

http://www.flipcode.com
http://www.gamasutra.com
http://www.exaflop.org

But if you search for BSP trees with Altavista or whatever, you can find a lot of info.

At the end of the BSP FAQ there are also some pointers. Especially the JAVA applet mentioned is very helpful.