With Corona Virus, how often are you supposed to wash or sanitize your hands?

Any time you touch a surface that potentially other people have touched.  So pretty much every time to touch a door handle, rail, tabletop, chair, dildo or money

Coming from a public place: Immediately Wash with soap and water; then sanitize after going to grocery, church or other public gathering. Do often even at home in isolation. Sanitize door knobs, counters/// etc heavy traffic parts of the house. 

Otherwise stay isolate but also wash with soap and water

when i am home alone only after i have been outside i come in and wash my hands

It depends.

- who do you live with, who are they around.

- what are you doing and touching.

If you 100% stay an home and live alone, then you wouldn't wash your hands more than normal.

If you are a police officer and your spouse is a nurse and you are doing childcare for others when your co-workers are at work, your hands are going to fall off from washing so much.

After each masturbation session, lol

Whenever you touch something that a lot of people also touches.