Last year I read Masters of Doom by David Kushner after someone mentioned it on Hacker News. It was the best book I had read in a long time. It won't improve your skills, but I think it will motivate and inspire you to immerse yourself (if we're talking programming, doing small projects and getting feedback is a better way to improve your skills anyway).
https://www.goodreads.com/book/show/222146.Masters_of_Doom