I agree there is a caveat to it as well Dmytro. Specifically what I mean by too much is along the lines of half a day reading or reading for a good portion of your waking hours. Reading for an hour or two is fine and I wouldn't consider that as "too much" but you do want to make sure you're spending enough time reading and applying the information. That or if it's a book of fiction you're not letting the reading hinder your life.