First ever physical copy of a programming book I've bought, lets's hope it's worthwhile.
1. Copying code from the book to an editor is MUCH easier. 2. Books take up physical space and it's hard to be mobile when you have to pack/unpack and move heavy things that you aren't going to be constantly using. I define things that I constantly use that are like my computer, laptop, kettle. 3. Cmd/Ctrl + F - I can't live without it even with a digital index.
Also, libraries. I read a lot of technical books when I was a kid, but I certainly couldn't have afforded to shell out the $80-100 for each of them.