That boat looks like it would be a blast to learn on.
I am not familiar with any of those rivers, but if you see other sailboats that size and bigger there I'm sure it would be great. I would NOT venture out on a river without a small outboard though. You'll see why on your first sail.
The ad did say an anchor is included.
There are many books available to so you can read up on the basics. I started with Chapmans piloting and seamanship.
Sailing might just become a life long passion as it has for so many of us.
Oh, to be you....what college hottie wouldnt want to take you up on an offer to go for a sail!