I started reading books from the Pragmatic Programmers back when I started learning about Rails 1.0 and over the years have built up quite a significant library from them.
They are having their annual Thanksgiving sale, 40% off all ebooks (code “turkeysale2015”). A great time to load up for some holiday reading.
My recommendation this year is The Nature of Software Development. It shares many core values I have about software development. It’s a short read with lots of quirky sketches. I highly recommend it.
There was also a talk at ETE from Ron about the book but I’ll continue to recommend the book itself more as I think it’s a little more focused, better value for your time.