Composing emails in Gmail works in a very simple way. Follow the directions below:
1. Navigate to http://www.gmail.com.
2. Click on the red compose button towards the left hand corner of the screen.
3. A slide up window should form in the lower right hand corner of the screen. It looks like this:
4. There are three main sections to the email and you should be familiar with them all. The first is the recipients. This is who the email will be sent to. Using Google Apps for education makes this work wonderfully. Instead of worrying about typing a student's email address in, because they are part of Google Apps for Education, you can simply type their name, and it should show up, like this:
5. Click the student you would like to add and that will add them to the email. If you would like to add more than one, start writing the next students name. Also, if you've set up a group for a class or something like that, you can type in that group email address, and the email will automatically go to everyone in the group.
6. Write in a subject (optional) and then write in the body of the email.
7. When done, click the blue send button at the bottom of the window.
8. As you can tell, there are some other options as well for what you can send. Play around with them a bit to learn more about them.