One of my favorite books of all time about business relationships and networking is Never Eat Alone by Keith Ferrazzi. Check it out on Amazon.com
Keith talks about a number of great tips, including:
The Networking Jerk – how to avoid being one
Managing The Gatekeeper – how to get in touch with people who others think are untouchable
Be a Conference Commando – how to make the most out of the conferences you attend.
Here is a review as well.
“Your network is your net worth. This book shows you how to add to your personal bottom line with better networking and bigger relationships. What a solid but easy read! Keith’s personality shines through like the great (and hip) teacher you never got in college or business school. Buy this book for yourself, and tomorrow go out and buy one for your kid brother!”
–Tim Sanders, author of Love Is the Killer App: How to Win Business and
Influence Friends and leadership coach at Yahoo!