Need some tutorials on...

Hi I seek some tutorials that can help me with sulpturing a model.
Also is there any good gimp plug-ins you can suggest that would help create a realistic texture?

http://www.becausewecan.org/node/258


http://amandalevitsky.googlepages.com/sculptedprims
and more on this link
http://wiki.blender.org/index.php/Release_Notes/Notes243/Sculpting_Tools
Google is sometime best friend !