Meep! Click the button to start the tutorial, it will open in a new window, don't close this window untill you're done with the new window.
Also, suggestion: Don't fiddle around unless the tutorial asks you to, you might screw up the nicely scripted messages :p

Mandatory user comments:
TFO: Its like a Drug..
TFO: This is making me feel so much more relaxed..
* Squee just took a look at it...good stuff
Mardak: what? how about my user comment? o.o