1. Wash your hands frequently
2. Especially wash your hands before eating
3. Practice not touching your face. In particular eyes, mouth, nose
4. Keep distance from people. Aim for 1.5 feet. Double that if person coughing or sneezing
5. Don’t shake hands
6. Avoid large gatherings
7. If sick, take sick days
8. Watch out for objects many touch but which are infrequently cleaned. Doorknobs, pens, elevator buttons, etc. Using your elbow or sleeve is better than your hand. Once community spread starts, wear gloves.
More here. If everyone did the above the R0 would drop.
https://foreignpolicy.com/2020/01/25/wuhan-coronavirus-safet...