Useful books for teens and adults that actually teach something you could apply to your life

You could try a book on finance (like Barefoot Investor) to teach you about the importance of saving/investing/having long term goals.

Otherwise, fiction teaches you a lot more than you would think – empathy and being able to understand other’s perspectives, as a start. They’re also pretty entertaining to read!

Have a look at Matt Parker’s 3 books, perhaps Things to Make and do in the Fourth Dimension or Love Triangles.