Unfortunately, there are no books on the embedded management subjects yet. However, there are quite a few resources available on Cisco.com (this forum being one of them). This is a good launch point:
http://www.cisco.com/en/US/products/ps6815/products_ios_protocol_group_home.html
On top of that, there is a great example scripting forum which has examples from both Cisco engineers and customers at:
http://www.cisco.com/go/ciscobeyond/
If you have specific questions about EEM, you can ask on this forum, and I will try and help you. I will also be hosting an Ask the Expert session on embedded management at the eng of October where I will focus on the various technologies. That thread will be good to watch to see what others are doing.
