This question has been asked of me lately quite many times, which has triggered me to write this article. Over my 20-year career in product management, I have mentored several aspiring product managers and also discussed with my colleagues how they became product managers.
Nice one. To add to the library, I liked "Lean Startup".
Nikolay, thank you for the recommendation!
I haven't read that book yet, but looking at the reviews and the summary, it seems very promising. I'll add it to my reading list.