Thanks! The 'tutorial' dialog was one of the last things we implemented and it was a really tough decision of whether we wanted it to reappear if you restart and not be intrusive.
I was thinking back on it since the levels its used are relatively easy it wouldn't be a big deal to have it show up, or even disable the ability to skip, I think your suggestion is really good too though so maybe we'll throw in a 'Hint' button or something.
Thanks again!