Here is an illustration of the default Sakai user interface:

In this case, the MyWorksite page is displayed. This is a private workspace where you can keep your own documents, manage your own schedule, etc.

Across the top of the page are tabs that represent other worksites that you have access to. In this case, there are more sites that can fit across the top, so a drop down menu is provided to access other sites.

Down the left side of the page are tools that are available. In this case, the Home tool is selected, indicated by it's white color. To access another tool, just lick on it's name.

In the center of the page, the tool contents are displayed.