IF you can sign up for an account (the site was having issues today), try completing 4 lessons. They can be big lessons or just review. It'll help you when you get started designing.
If you have trouble signing up for an account, it's ok! We'll keep our fingers crossed that they get the kinks worked out of the system by the next time we meet.
Read the "Elements of Science Fiction" and think about which elements can be found inside of "The Fun They Had."