Linden Scripting Language References
Official LSL Guide
Unofficial LSL Wiki Reference
There is a alternative, wiki for LSL, at http://lslwiki.net/. This wiki, usually has more richer and helpful info than the official wiki, as of 2009-03.
Some part of this tutorial contains info derived from the above sources. I'd like to thank the above resource's creators.
Try Xah Tele-Dasher!