Daily.
Before enrolling at the UW, I was coding thanks to C# Primer Plus and PHP & MySQL web development.
Educational books have provided me employment opportunities (first coding job @ 100m+ company @ age 16 from self teaching) && recreational books have really changed the way I think about the world and problems (outliers, smartcuts).
Books inspired me to write, and publish my first coding book and more recently inspired me to start a free educational channel: https://www.youtube.com/devfactor
There is so much you can distill into a book, its difficult to match with other mediums.