1.3.8 Getting Help in the Notebook Front End
In most versions of the Mathematica notebook front end, the Help menu gives you access to the Help Browser, which serves as an entry point into a large amount of online documentation for Mathematica.
Typical types of help available with the notebook front end.
An example of looking up basic information about a function in the Help Browser.
If you type the name of a function into a notebook, most versions of the front end allow you immediately to find information about the function by pressing an appropriate key (F1 under Windows).
When you first start Mathematica, you will typically be presented with a basic tutorial. You can visit the tutorial again with the Tutorial menu item in the Help menu.