Here are some links to useful resources for Google Apps for Education:

• Google Classroom – Classroom was designed hand-in-hand with Google Apps for Education teachers to help them save time, keep classes organized, and improve communication with students.
  Here’s a short video showing some of its features, and here’s a longer tutorial video showing how to create classes, add students, make notifications and assignments, etc.
• Google Online Training Center – Google designed the new Training Center with the teacher and classroom use at its core, and they built it on an interactive platform to support the learning process.