Anything by Will Richardson is great, specifically "Blogs, Wikis, Podcasts, and Other Powerful Web Tools for the Classr...
I'm also a big fan of Liz Kolb, who is the authority on Cell Phones in Education -- she wrote "Toys to Tools: Connecting Student Cell Phones to Education."
For more, here's a list of the Top 10 Ed Tech Books of the Decade.
Digital Tools for Teaching by Steve Johnson
Pitler, H., Hubbell, E., Kuhn, M., & Malenoski, K. (2007). Using technology with classroom instruction that works. Alexandria: ASCD Publications.
Thank you for your response. I'll pass on the information to my friend.