It would be great if you said this somewhere prominently before needing to sign up for an account. Once I saw the "refund" section near the top of the Terms and Conditions, I closed the window, assuming that you'd be asking for a credit card number.
100% make this clear from the outset. I "stopped" at the create account screen because I didn't want to go through the trouble just for some teaser videos. I hopped over to the hn comments to find out what the deal was.
Hopefully helpful feedback from someone interested in this kind of thing:
1) I was assuming "Get Started for Free" means there's a free trial followed by a subscription fee type service.
2) It would go a long way to have a little more content (in terms of pics or specifics about the program) to tease sign-ups. The sign-up wall came a little too soon, before I felt interested enough to continue.
Well, I was chased off by the signup. Maybe I'm not your target market, but I'm unlikely to sign up until I'm pretty convinced that it's something I'm interested in.