There are 20 steps to the tutorial, and the interface is very similar to Scratch (which I introduced on this site in June).
First, though, there’s a 3 minute introductory video, with some inspiration and some explanation:
When you’re ready to start the tutorial, just drag and drop the commands. Then press play (“Run”). You’ll see the characters move.
When things get a little more complicated, there are new videos to help.
When you finish with Frozen, there are other tutorials: Angry Birds is just one.
The site is advertising “The Hour of Code” (December 8-14) and trying to get people interested in learning how to program:
It’s like learning a new language, so give it a try!
I made it this far in about 15 or 20 minutes:
When you complete all 20 steps (the last one requires some creativity!), you’ll get a certificate of completion: