As far as we know, it's not airborne -- rather, it's spread the same way as any other flu: contact.
Wash your hands after touching commonplaced things like door knobs/handles.
If you're sneezing, cover your mouth/nose with your hands/napkin/whatever: sneeze inward, not outward towards other people. Also wash your hands after that.
Feeling sick? Know you're not getting any better?? Don't go to work/school and infect everyone else.
My uncle's been sick the past few days. It's not the coronavirus, but it is bronchitis, so he's been working from home to not infect anyone else at work. He's also been taking medicine, drinking plenty of fluids, and washing his hands.
Me and my aunt have been also doing the same (washing hands and taking care of our bodies) to minimize any chance of catching his flu.