TYPO3 contains three different fields. The one on the left is the menu which allows you to access the different edit modes. (img 1.5.1)
Page; Create new pages and content.
View; Preview the website inside the backend.
List; Work with database objects, ex News elements.
Filelist; Upload images and other files to use on the website.
Task center; Quick links to create database objects.
User settings; Change password and other personal settings.
Manual; Link to the website www.typo3manual.se
Support; Link to Pixelant Helpdesk.
The field to the right of left menu, contains the page tree of which the structure of the website is built on. (img 1.5.2)
Clicking a page in the tree structure will in return expand a third field, where all page editing is executed. Each post in the tree structure represents a page on the website. (img 1.5.3)