The main section of the TYPO3 back end is broken-up into modules. A module is a section of the back end that controls a particular aspect of TYPO3.
We have the Web module for working with our website's content. This will be our most frequently used module.
The File module lets us manage files that we use within our website.
The Doc module lets us easily access pages that we have opened and are editing.
We can view users who access TYPO3 and compare their permissions using the User module.
Tools and settings can be accessed from the Tools module.
The Help module gives us quick access to a number of help topics for working with TYPO3.
The Admin Functions module contains some infrequently used maintenance-related tasks.