There are two systems that I think used a kind of choose your own adventure scenario style to teach players how to play the game.
The first is Call of Cthulhu. I played through Alone against the Dark when I first started playing Call of Cthulhu to see how investigative scifi cosmic horror ttrpgs work. Well how Chaosium designed the game to be played.
The next system is West End Games Star Wars had a tradition of solo adventures designed to show players how to play the game, including fan made adventures.
I think that FFG star wars needs a set of solo adventures – one for Edge of the Empire, another for Age of Rebellion, as well as Force and Destiny, and something that encompasses all three settings – as a means for introducing people to the game by themselves.