User Interface Guidelines This same site offers developer guidelines which even as a designer you must review as they cover IA constraints. Much like getting the back stack to work right in Android, you have to read these.
Glass Sim Not quite right (the FOV of the screen is way too big) but a useful way to quickly mock up ideas for how you could use Glass.
I have serious reservations about these guidelines. Read my article on augmented reality and HUDs here http://www.uxmatters.com/mt/archives/2012/04/eyes-on-the-road-or-mind-on-the-road.php