I am totally one of those librarians who loves talking about financial literacy. Teens, particularly, really need help managing the realities of debt, spending, credit, etc. In 1989, I probably would have bought this for a library collection.
Lots of good discussion about fraud and spending. Now a days I bet we would have a hard time understanding some of the vocabulary such as money orders, paper checkbooks, taking advantage of the float between deposits and checks (I was quite the expert in the 1980s), etc.
The one scam that was around during my teen days were the mail order record clubs. The ads touted a huge number of albums for something like a single penny. The trick was you had to opt out before the club sent you all the crappy selections. (Read more about these clubs here, here and here. These articles are kind of old, but entertaining.) I would guess that a good percentage of my fellow teens indulged in this questionable scheme.
Spend wisely, kids.