There are many resources online. A quick Google search would probably yield good results.
Below are some links to get you started:
Links from GoogleGoogle Support for Google AppsGoogle Apps for Education Training CenterCollection of Resources from the Elementary InfotechsIncludes resources on Google and Social Mediahttp://sqworl.com/wo9eukTechnology Tutorials for Teachershttps://sites.google.com/site/teachertechtutorials/googleapps#TOC-Google-Apps-Training
Links from Google
Google Support for Google Apps
Google Apps for Education Training Center
Collection of Resources from the Elementary InfotechsIncludes resources on Google and Social Mediahttp://sqworl.com/wo9eukTechnology Tutorials for Teachershttps://sites.google.com/site/teachertechtutorials/googleapps#TOC-Google-Apps-Training
Includes resources on Google and Social Media
http://sqworl.com/wo9euk
https://sites.google.com/site/teachertechtutorials/googleapps#TOC-Google-Apps-Training