How do i know i have the latest version?

Hello, To see if you have the latest version of Firefox, first open menu, then select help, then click about, and select about firefox Note : opening the about firefox menu auto checks for updates. If you want to check simply, you can search what is the latest version you are on and compare it to the latest release. If you want to update, in the about menu, it will ask to download a new update if it is out of date, after which you restart the browser after the update is done downloading.