Hi! We'd be happy to help you with your issue.

Can you please explain the problem that you are having in a little more detail? This will help us to better diagnose your issue and offer solutions.

Thanks.

Are you talking about the application menu in Firefox itself, with things like "File", "Edit", "View", etc.?

If so, try the "Alt" key (press and immediately release it).

If this solved your problem, you may want to read this article about keyboard shortcuts used in Firefox.

Maybe the instructions are old? Firefox 4-28 on Windows had a rectangular orange button at the upper left labeled Firefox. In Firefox 29 and higher, the menu button is on the right end of the main toolbar and has an icon of 3 horizontal bars.