Any book written by Charles Petzold is an enjoyable read, though particularly the non-MS specific titles Code and The Annotated Turing. Java Concurrency in Pra

Any book written by Charles Petzold is an enjoyable read, though particularly the non-MS specific titles Code and The Annotated Turing. Java Concurrency in Practice (2006) is older but relevant and clearly describes concurrency on the JVM. A must read for any Java, Scala, Clojure, etc. software engineer; well-written, enjoyable, concise. Practical Object Oriented Design in Ruby by Sandi Metz is a fun read packed with good principles for working in Ruby that are applicable in general to object oriented programming. Smalltalk Best Practice Patterns by Kent Beck is worth a read because the general principles are applicable to any OOP language. Clean Code by Robert Martin is excellent but a time commitment. (If you had to pick between SICP and Clean Code because time is at a premium I'd err on the side of Clean Code for practicality. Writing maintainable code is paramount.) The Joy of Clojure (Fogus/Houser) is excellent and mentally digestable even if you have no Lisp or Clojure background.