There are different major shortcut keys that are available for Mozilla Firefox that can be used on a Microsoft Computer. Some of the Mozilla Firefox shortcuts that you can try are the following: CTRL+N - This will allow you to open a new browser window. The next one is CTRL+O - This will help you open a new file window that will help you open a new file in Firefox.
CTRL+P - This will help you print the current page or the frame that is currently displayed on your monitor. CTRL+T is a shortcut that you will use when you would like to open a new tab. CTRL+J will help you see the download window so that you can be updated if the file that you are downloading is already finished or not.