When I started exploring Google glass development for first time, I came across some sample apps, some links which helped me to quickly start development and test first Google Glass sample. I would like to share those references, links which can help someone who is starting Google glass development.
Google glass application developed by Google Inc. -
List of some of the Google glass applications - http://glass-apps.org/google-glass-application-list
List of Google glass app and app for other wearable smart gadgets - http://www.glassappsource.com/
Google Glass Development without Glass - http://www.elekslabs.com/2013/11/google-glass-development-without-glass.html
Google Glass XE7 APKs to run on other devices - https://github.com/zhuowei/Xenologer#install
Google MyGlass setup - http://imgur.com/a/IBqFf
Google my glass link - https://glass.google.com/myglass
Google-Glass-Temp Emulator - https://github.com/chariard0008/google-glass-emulator
Google-glass-hello-world sample app source code - https://github.com/Mobilevangelist/google-glass-hello-world
Have easy kick start with Google Glass development!!