I still learn and teach (informally) from books. You can find everything online, but there’s something specifically useful about the long form survey or completion of ideas that comes from a well written book as well as the physical reference. I don’t think books are a till I’ll ever take out of my bag.

Presently working on getting my feet wet with machine learning and primarily with a book. Of course it’s out of date the second it’s printed with a fast moving topic but it has still been incredibly useful as a survey and basics.