I have to. I definitely buy some tech books on Kindle and follow web tutorials too. I'm not against doing those things. But when I care to really understand a t

I have to. I definitely buy some tech books on Kindle and follow web tutorials too. I'm not against doing those things. But when I care to really understand a topic in tech, for reasons I'm not even sure I can explain, I need a real, physical textbook. Strangely enough, a lot of it has to do with my brain's need to mark important sections with a pencil (yes, I know I can highlight sections on the Kindle app too...but there's something about physically circling/underlining/drawing a star near a section with a pencil that helps me to recall it later).