Various commands for get the help:

There are various commands which can serve as an introduction to MATLAB and allow you to get the help:

info will show contact information for the product

demo has demos of some options in the MATLAB

help will describe any command; help help will describe how the help works

helpbrowser opens a Help Window

lookfor searches throughout the help for a specific string (be alert that this can take a long time)

To exit from the MATLAB, either type quit at the prompt, or select File, then Exit MATLAB from the menu.