Old Man's War

In this first book of the series, John Scalzi introduces us to an imperfect universe. Mankind hasn't completely destroyed the Earth, but some wars have made some countries unlivable. The science behind the sci-fi elements of the story is glossed over because the human narrator doesn't understand it. Most of the technology is alien (and probably not possible). The protagonist tries to lighten the mood with humor, which I enjoyed even if the other characters didn't. I'm looking forward to seeing how the universe changes in this series. The way that humans interact with the various alien species needs to improve.