Hi, Mandalyn! Happy New Year. I highly recommend Goodreads. I have discovered so many books through that website and found lots of people to discuss books with. You can create all kinds of different shelves to keep track of what you’ve read and what you’d like to read. They also give you book recommendations based on the books you’ve read and rated and you can also browse the different genres on their site.
For 2011 they added a challenge option for you track your progress. I’m sure they’ll have another one set up for 2012 as well. There is link to my Goodreads account on my page if you’d like to add me as a friend once you set up your account.