It might just be a problem with me, but I think that the level of articulation that a book can offer is way higher than what a video could. A book is written do

It might just be a problem with me, but I think that the level of articulation that a book can offer is way higher than what a video could. A book is written down, read, edited, and thoughtfully compiled, with the possibility of new editions coming out regularly. With a video this is less easy to do unless you want to keep re-recording.