If we absorb all unuseful information in a book. Then group those facts in themes. What do we get? A Book.
The book is made for saving your time in learning. All info that I absorb in books, courses, and blogs, I combine in a 15-minute reading.
Questions of the Book: How to relax? How to not die with overfatigue? What to do if you haven't got any time? What to do if you couldn't control your emotions? How to conflict in the right way? How to suck less?