Originally posted by badivan1
"A Complete Defense for Black" by Raymond Keene and Byron Jacobs proposes a repertoire in which Black plays 1...Nc6 against any first move by White. It is an excellent book, with tons of complete games. I'm returning to OTB tournament chess, and I plan to play either 1...Nc6 or 1...b6 in all of my games with Black. (I recently purchased "Play 1...b6" by Christian Bauer.)
Edit: A new book by IM Christoph Wisnewski called "Play 1...Nc6" might be worth a look. It has received a couple of excellent reviews. The title is a bit misleading though, because against 1 d4, Wisnewski says Black should play 1...d5, followed by 2...Nc6 against virtually any second move by White. That move order avoids the 1 d4 Nc6 2 d5 variations.