Both tutorials are completed via the PM system.
You start the first one by typing
@discobot start new user
in a new PM, then follow discobot's instructions in the PM thread.
Once you've completed the first one, the second one can be started with
@discobot start advanced user
As you're not admins of this forum, you will need to respond with "skip" for the one step you don't have the power to complete correctly.
One last tip: Don't say "thanks" to discobot. That's the quit tutorial command (that I learned by accident),
Let me know how it goes.