Here are some of the places that I go during my computer time.

Xtremeowners.com A great place for information on Xtremes, SS, Sonomas or any kind of S-10 or S-15. Just click on the picture

2000xtremewhite Another great Xtreme site. He also sells some custom items for S10s.
4chromewheels A great place to get factory chrome wheels. He will send you four new chrome wheels just like your factory ones and you send yours back.
Nightcrawler xtreme Another great site dedicated to the Xtreme!
The Xtreme site Lots of good S10 information

LHT Performance Some killer S-10s and Sonomas with LT1s, and LT4s.
Geoff's Xtreme page A sweet red xcab, check out his step plates.
The Syclone and Typhoon site All about the Syclone and Typhoon.
Matts '01 Xtreme A great site with a very nice 2001 black xtreme.
S-Series forum A great site with many knowledgeable people on any type of S-10/15 and Sonoma.