Maybe it's my selection bias but I found books that I read [0] to have higher information density than what I find online. [0]: I usually pick books with "Adva

Maybe it's my selection bias but I found books that I read [0] to have higher information density than what I find online. [0]: I usually pick books with "Advanced" in title (or similar) even when I'm beginner in the subject at hand. It's easier to work backwards from advanced stuff for me.