Joy of Clojure & SICP. To a lesser extent, Learn You a Haskell. 7 Languages in 7 Weeks is an excellent good baby step book if these are too daunting. 7in7 was my first intro to many new ideas.
Any language worth learning has this property of influencing the way you think forever. TDD, Code Complete &co are all very integrated into mainstream industry and are no longer novel. If you find yourself needing to recommend your colleagues to read Code Complete you might consider working on the skills to get a better job.
Any language worth learning has this property of influencing the way you think forever. TDD, Code Complete &co are all very integrated into mainstream industry and are no longer novel. If you find yourself needing to recommend your colleagues to read Code Complete you might consider working on the skills to get a better job.