I agree, I created an account and tried clicking on “Study” and it didn’t work. Aside from the demo on the main page there wasn’t any way to see how well it works.
If you're talking about menu being grayed, it's because you did not start the trial. I wanted to make the trial to start immediately after creating an account, but stripe force the trial to be attached to a price. So I'm forced to let the user make the price choice (without paying) even for a trial which I absolutely hate and would be love to have a better flow. I want and will find a solution to that.
If you're talking about content to try directly after making an account, you're right. There's none for now. Something definitively can be improved there. Noted.