How do I clean my board after raw meat?

Wash it right away with hot water and dish soap, scrubbing well with a brush or sponge.
For extra disinfection, rub the surface with white vinegar, or half a lemon with coarse salt. Let it sit a few minutes, then rinse.
Dry it upright immediately. Never soak it and never put it in the dishwasher.
Once it's fully dry, apply a thin coat of food-grade oil or beeswax.