I was reflecting on what would have made my initial learning curve less steep. I think a more involved working app_lite example, demonstrating basic necessary features, would have made my life easier.
So I put together a live cribsheet mojolicious:lite example, which I am posting on github.
The specific code is merely a suggestion for a live cribsheet. I hope it helps others.
as to helpful location, I would put something like this at the start or end of the tutorial; and/or I would also suggest that mojo add something like "mojo generate medium_app" that creates something like it.