Here’s an image of the Overview page, after you have a few donors and donations:

You will see that on the left there is a menu of the different pages and sections of the program. If you are on a smaller screen (such as a tablet or phone, or a browser window on a computer that is not full width, the top of it may instead look like this:

In this case, the menu is hidden within the “hamburger menu” of three lines at the top left. Clicking on it will slide out the menu.

This type of overview page is also often called a dashboard.