In addition to the book mentioned by Patrick Lambe. I also found the following two books to be helpful from a practical standpoint in using the tools:

Hanneman, R. A., & Riddle, M. (2005). Introduction to Social Network Methods.

Retrieved from http://faculty.ucr.edu/~hanneman/nettext/index.html

Hansen, D. L., Schneiderman, B., & Smith, M. A. (2011). Analyzing Social Media

Networks with NodeXL. Morgan Kaufmann.

In addition, there was a lot of online help/discussion groups for EgoWeb 2.0

Jennilyn