Been using Linux for years, pretty experienced with command line etc..

Tried GhostBSD, impressed but no wifi. My laptop has a Realtek card which I understand have been a problem with Linux in the past but seems to be fine with Linux 4.15.0-76-generic
I know what drivers and firmware my card uses so how do I install these to GhostBSD in an attempt to get it working. Ethernet works fine.
Geffers