The text editor has many functions that will allow you to upload images, media, and files and also add links into your content.  These items that help you out are called your Managers.  There are several different Managers that do specific tasks.  This tutorial shows you the layout of your Managers.

For more information about the manager buttons below, click on the name of the button.

The following toolbar contains common commands and terms, and as such doesn't require further explanation.