Recently active topics in Dipity tagged with private

1. I know you're going to laugh at me, but I just signed up for Dipity and can't find *any* instructions on how to use it. When I clicked on the pop-up for the 60-second demo, it disappeared. Now I can't get it back. Is there a tutorial or help page somewhere? Is the link staring me in the face?

2. I saw where you said I could make my timeline private by clicking on a link near the title, but I can't find that, either.

Go ahead, laugh. I don't blame you. Just as long as you answer the questions :)