Comment by EVa5I7bHFq9mnYK

There is quite a lot of technical knowledge involved: what is inflation, how to defend against it. Various investment instruments, their risk profile. What are popular scams, how to recognize (credit cards is the most popular and dangerous scam IMO). Сompound interest, mortgage calculations, etc.

As to the "character", that's mostly learning about the mathematical concept of "less": spend less than you earn.