The fact that something man made is on Mars is amazing enough. But the fact that anybody with an Internet connection can see it and share some of the data is another incredible accomplishment... and opportunity.
NASA built a special site just for the exploration, and as you'd expect, they made it as high- tech as possible with flash animations and cool graphics. It's a simple site to navigate, but I have to warn you, with all the interest in the rover, it's very busy, and potentially very slow. If you don't have a broadband connection, it will be painfully slow.
I'd suggest you start with a look at the rover itself. Pick a part of the machine and see what it does. Whatever you pass your mouse over turns red, and the click will leave that particular part of the rover flashing red while you read the description. Or check out the 360* rover you can spin and examine on your own. Not quite as informative as the piece by piece view.