When you start CC3 for the first time, you see a screen with a Menu Bar, Status Bar, Color Bar, Toolbars, Symbol Catalog Window and a command prompt line surrounding a large drawing window that contains an arrow-shaped cursor.
When you install CC3, you have the option of using just a Simple toolbar. This is a great way to get familiar with CC3, and includes the tools most commonly used for mapping. You can swap between the simple and full interface.
Click on the image below for a summary of each screen feature: