It's a great book, I bought the paper version first, but man it was too big and heavy for my liking, ended up buying a digital copy; much more practical for notes and search...
although I keep getting lost somewhere in the mountain :)
I also recommend munificent's other book about game programming patterns. Both are fun to read.
Sometimes I get the spine guillotined off and replaced with a ring binding. Any print shop can do it for you, and you just lose the gutter plus a little margin. Easier to work with at a desk, and you can even split into two "books" if you feel it necessary.
But that's only for books I don't want to keep, and Crafting Interpreters is definitely a keeper...