Android & Google Plus
google drive and the google drive sdk
High quality Android apps
Google cloud platform (for those who know Microsoft Azure)
The Glass Class - Tutorial1 - Introduction to Glassware Development
Location-Based Services on Android
Augmented World Expo 2014 Wearable SDK Overview
GCM with Pushbots
Push to Me: Mobile Push Notifications (Zend Framework)
Google+ and the Google+ Platform
Introduction to Google Drive API
Introductution to social connect Magento extension