When I got sick and tired of being single I read How to Be a 3% Man, Winning the Heart of the Woman of Your Dreams 20 times in a year. That gave me time and repetition to internalize the lessons and also reflect on what was then going on in my dating life. It turns out this method worked.

Another way to learn in a deeper way about something was when I really started to learn about Bitcoin. It's more than just reading, and re-reading its about writing, discussing, asking questions. Back then I co-authored a book about bitcoin, that was helpful challenge.

So I would reply to the question like this: when reading a book for the first time, I don't take pressure of understanding it all. If it's good, I'll reading again as many times it takes. Usually I take notes, ask questions and discuss about the book with someone to gain deeper understanding.