Your first time here?  Here's a suggested course of action:  first, get a little background on both characters by reading the first two sections.  Then, see how Virgil fits into the Divine Comedy by reading the next three sections on Dante's choice of Virgil as a link to Homer, and a comparison of literary techniques.  Last, see what Virgil symbolized for Dante in the conlcuding section.

And if you're still hungry for more, check out the art gallery for a sampling of the many works of art inspired by the Divine Comedy, especially depictions of Dante and Virgil together.