Below are popular books on networking. Any comments/reviews and other suggestions are welcome.
The Virtual Handshake: Opening Doors And Closing Deals Online by David Teten, Scott Allen
Love Is the Killer App: How to Win Business and Influence Friends
by Tim Sanders
Never Eat Alone: And Other Secrets to Success, One Relationship at a Time
by Keith Ferrazzi, Tahl Raz
Make Your Contacts Count: Networking Know How for Cash, Clients, and Career Success by Anne Baber
a classic:
Dig Your Well Before You're Thirsty : The Only Networking Book You'll Ever Need by Harvey Mackay
Many books from Harvey Mackay are winners like
How to Build a Network of Power Relationships
another classic:
How to Win Friends & Influence People by Dale Carnegie