You will be guided through a shopping cart interface to "purchase" a registration even though Indiana LinuxFest is a free event. You will also be able to add additional registrants such as your co-workers, friends, etc...
When creating your account, don't forget to fill in your profile information so others can find out more about you and so we know what to feed you! If you want your face to appear in the photo gallery over on the right, just upload a picture of yourself to your profile.
You may also submit a session proposal. Please do, even if you are not sure that it will be accepted. Seriously, you never know! Plus, it's fun to talk about topics you know with like-minded people.