Since I'm a new manager, what one must-read book do you recommend for me to learn the basic management skills?

 " Management Science Decision Making Through System Thinking " by Hans G. Daellenbach& Donald C. McNickle  this is my favorite basic management skills handbook

all Peter Drucker's books is great to widen your vision about management "he is a legend in management"

if you ask about facilitation techniques and soft skills like motivation, team building, creative thinking ..etc you should read " The Practice Of Leadership" by Jay A. Conger& Ronald E. Riggio 

Here is the link:

http://mba.epage.ir/images/mba/mba_in_a_day.pdf

MBA in a Day by Steven Stralser, PhD

This is the best book I found to have a quick grasp of the overall management skills that we have to deal with on daily basis.

I don't know.  But I write a lot about the basic management skills here and, at the risk of immodesty, you could do worse than read through my posts.

The new advice I give to new managers is always, think about the managers you had in the past.  Copy the good bits, and make sure you don't do the bad things.   Always be thoughtful.

'The one minute manager' written by Kenneth H. Blanchard.  It only takes one hour to read and has advice that people have been taking for years.  It has been a best seller in the US. since it came out.  Good Luck with your new position!

Congrats on your new role!

These3 are the simplest, easiest to read "New Manager" books:

• Minute Manager - Kenneth H. Blanchard
• Games People Play - Eric Berne
• Whale Done - Kenneth H. Blanchard

Hi. As a start, I recommend Managing For Dummies. It is straight forward and easy language. Good luck!

http://www.dummies.com/how-to/content/managing-for-dummies-cheat-sheet.html 

Perform work as per wishes of Senior and improve your work done per day. Surf www.ignou.ac.in for books and articles about the basic management skills.

the seven habits of the highly effective people

Leadership: The power of emotional intelligence by Daniel Goleman