The definitive work on design patterns (if you do OOP, you need this book), now demoted to eBook form. Code examples (code examples?!?) and diagrams captured in fuzzy jpeg--neither impossible nor pleasant to read. Evaluate the sample before you buy. If you're getting used to the new norm of industry ups and downs, and want to avoid becoming That G(uy/irl) Lugging Boxes Out During The Big Restructuring (a juicy photo opportunity for the local paper), this (eBook) edition can help. But for anyone who already has a pile of books, go ahead and grab the wood pulp edition. The print book, ingeniously indexed several ways, suffers no disadvantage relative to the eBook--weight and size aside.