Mainly the book guides us to think of questions that would help us to understand ourselves (and someone else) better. Filled with concrete examples and tips, easy to read.
P.S. At first I bought it bc I want to be able to ask questions better in academic seminar but turns out it's not that relatable lol, which is unexpectedly good thing. I feel like I picked this book at the right time as I have been questioning myself quite a lot recently.