First, wash your hands regularly with an alcohol-based hand sanitizer or with soap and water. Hands touching a contaminated surface or a sick person's face is one of the ways the virus spreads, so cleaning your hands can reduce the risk of spreading the virus.
Second, regularly clean surfaces, such as kitchen tables, chairs, and desks, with disinfectant.
Third, educate yourself about COVID-19, but make sure the information comes from reliable sources such as local or national public health agencies, WHO websites, local health professionals, etc. For most people, the initial symptoms of contracting the new coronavirus are a fever and a dry cough, not a runny nose. Most infected people have mild symptoms and get better without any special care.