Traceroute(Unix) and Tracert (Windows) are commands used to trace the path packets or information take from your computer to its destination on the web. These are terminal commands and the output can be somewhat techie.
If you would like to see how information gets from your computer to say google.com, and you would like to see it in a simple format, you can use a “visual traceroute” program. The visual traceroute program runs a trace of the path your packets will take to the destination, then displays them on a map for you to see.
One such program available is the Visual Trace Route Tool by Kirk Ouimet. It is a nice program that ties the output to a google map so you can see step by step the path that your packets take. Check it out at http://www.yougetsignal.com/tools/visual-tracert/.