?All that is possible with XBEE?

So i just purchased 4 of the xbee pro 2.4 ghz xbee modules from Mouser with the hopes to understand how to make them communicate in a mesh network. I have found lots of information on the web about how to do point-to-point with just 2 modules but i want to have 10's of them deployed in the field, collecting data and keeping me informed. Lets see what we can learn.