This is my first post so I hope I'm not stepping on anyone's toes at the moment.
The latest relevant post I can see relating to NeHe is from 13th of May (http://www.opentk.com/node/1768).
I'm doing NeHe lesson conversions and plan on doing as many as I can. At the time of this post, I have Lessons 1 - 17 converted with the exception of lessons 13, 14, and 15. I do not plan to stop here at the conversions but I wanted to put up a post in case anyone was attempting OpenTK for the first time.
If you see anything wrong with my lessons feel free to say something.
The lessons are available at the link below. You can ignore the bottom half of the page as that relates to other projects.
Thank you for your time.