Studying engineering in an academic setting is an ordinary way to develop an engineering discipline.
Reading about engineering is not practicing engineering…sure it might be part of an engineer’s practice once they are practicing. But it is not solving real or pretend engineering problems.
Sure there is also learning engineering on the job from experienced engineers. But again, that’s not a book.
To frame it another way, engineering practice is about doing things correctly to solve the problem. Not in the way that benefits yourself. That’s why people can trust engineers.
Reading a book is not the way the problem of becoming an engineer is solved. Good luck.