Login
When you first login you will click the "Start My Server" button.
Select Container
Select the desired container image that is relavent to relavent to the course materal being worked on. For a list of images and their packages click here.
Note:
The items under the "New" drop down menu. These will change depending on the container that is selected.
Switch Container
Click on "Control Panel" -> "Stop My Server"
Select
Select the different desired container
Note:
The different items under the "New" drop down menu.