In the toturial part, in each taks, it could be a difficult setting chose, like(easy;medium;hard) for each task(Probaly there is alredy) , first a player would complete the task in easy, unblock the next task and the difficult setting(medium or hard) from the previous task made.
And later the same instructors, could give new assignments, serve as "rank up" or teach new tecniques.
A map toturial could be made, to know the locations of things, places,information about the instructors and other things.
It could be leed by Petrie or a Petrie Icon.
And the map toturial could end in the instructor of your race chose, for example a swimer, the map toturial could end on Duckie.
Wish I could help, but I don¥t know much about this kink of stuff