If you don't want to go in-depth into theory, then you don't need a book.
Learn the three basic Nimzo systems: Rubinstein (4.e3), Classical (4.Qc2), and Kasparov (4.Nf3). I find that when I play the Nimzo, I don't really use a whole lot of theory, as positional plans fall into place on their own and are very obvious. As long as you have a reply to each variation and maybe theoretical knowledge up to move 6, you should be perfectly fine.
What are some good books on this that describe the general plans and have example games without boring me to death on what to do on move 12 of variation xyz