I'm not sure how good they are but you could try searching on here for "Chasing the Walrus" and "The Walrus vs" although they are possibly a little advanced than WP-101.
This link is to a pdf which has some basic info:
http://www.humnet.ucla.edu/itc/resou...s%20Basics.pdf
Install the script on a domain and start playing with it is probably better than any tutorial I know of. Stick with the default theme so you know how things are supposed to work.