The One-Minute Manager is a general book on how to appropriately manage people.
How to Win Friends and Influence People is a fantastic book on people in general.
Influence is a great book for managing up, or understanding why your people react the way that they do.
The basics for any manager are the following:
1. Know what you're solving for, know what your people are solving for. Make sure that they are in alignment.
2. Invest in your people. Time, money, etc. Not just technical skills, but soft skills. A smile and remembering someone's name go a long way.
3. Keep everything that isn't their job, out of their job. If someone is a bottleneck then there needs to be a defined point in time every week where they do documentation and/or training until they are no longer the bottleneck. Assume it will take other people longer to do the same task at first and accept it, make sure that they understand this is normal.
Edit: I'd also include this blog post in your reading: http://firstround.com/review/this-90-day-plan-turns-engineer...