Once you've started Maple up, go to the File menu and choose the Open ... item. This will pop up a file selection dialog box. Go to the Selection text entry subwindow and type in the filename //usr/local/mapleV3/examples/QuickTour.ms and click on the Load button. This should load the Maple tutorial QuickTour. If you have problems, ask for help.
There are other tutorials in the directory /usr/local/mapleV3/examples/. For example:
At the end of this handout is a list of Maple references and a guide to the discipline specific worksheets supplied as part of the Maple share library. Instructions for accessing these worksheets are also included in this document.