“Tip 1: Getting rid of [CTRL F]
The first tip is a basic tip but nonetheless helpful for users who
search on pages regularly. Firefox offers an option to start the
search on the page immediately without having to press CTRL F
first.“Tip 2: Search in all open tabs
The Find in tabs add-on provides another interesting search option.
It allows Firefox users to search in all open tabs instead of just
the active tab. This can be pretty useful for users who do research
and have multiple tabs open on the same subject.”