What are all of the legal documents that change once you're married?

Ok, my boyfriend and I are planning on getting married. It will just be a courthouse marriage until we are able to afford a bigger one to invite our families and friends. I want to know all of the changes we will have to make legally once we get married. For instance, I know how we file our taxes will change, but what else changes? I feel like I'm overlooking things and I want to make sure I leave no rock unturned before I make this big decision.

Well you will need to change your name (if you are going to do that) and you do that at the social security office, and with changing your name you will have to change your name on all your bills your bank accounts etc... Other then that there really isn't anything else Just remember it is alot easier to get married then it is to get divorced lol