Don't wish to write my usual rant on this here but that's the curse of electronics books. You get taught by a recipe book but you don't leave with enough skills to design your own one. Nor do you know which recipes should be served together. It requires a much lower level of understanding and that is hard.

I got taught via recipe books then studied EE at university and had to throw everything away. Then I started in industry and had to throw that away again. There's a huge moat between the two ends.