installing in Linux Mint.....
Today, on my old laptop, Firefox reported that the version I have installed would stop working tomorrow, losing functionality for video playing etc. It offered me a download .tar file for a new version, which I did. I have unpacked it but don't know what to do now. Previously I have used the Software Manager to install stuff but this doesn't have any versions of Firefox beyond the one it installed several years ago.
Help, please, in words of few sylables........