By the way, if you have an old laptop with a #
broadcom #
wifi card and it won't work on #
linuxmint or #
ubuntu , the solution is to tether your phone or get bluetooth internet or hard wire internet or borrow a usb wifi stick and use these terminal commands:
sudo apt-get update
sudo apt-get --reinstall install bcmwl-kernel-source
then reboot (if necessary)
https://help.ubuntu.com/community/WifiDocs/Driver/bcm43xx