Being a good manager is about using Leadership and Influence skills, proper delegation and time management and being aware of power equations. A knowledge of Negotiations too helps. But the most important aspects are taking care of the team and motivating them. Some good books that you can try are:

1. Influence: Psychology of Persuasion by Robert Cialdini
2. Shackleton's Way: Leadership Lessons from the Great Antarctic Explorer
3. Getting Things Done: The Art of Stress-Free Productivity
4. 48 Laws of Power
5. Execution by Larry Bossidy & Ram Charan
6. Getting to Yes, Bargaining for Advantage
Hope this helps!
Cheers,
D.