Thanks for the great comment! Yes, I agree that a short training course would have been nice, but I didn't make it to the end of the gamejam in time.
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That's alright, it happens. I also almost didn't make a tutorial in time for my entry xD.
I also seen other games with no tutorial inside. They instead put the tutorial and other useful information in the itch.io page itself. I think that's a good thing to do, especially if you ran out of time, since you are still allowed to edit the page itself after the game jam has ended.