DO call a chimney professional when converting from oil to gas or replacing existing boiler/furnace.
DO use seasoned hardwood.
DO use commercial fire starters if you like. They eliminate the need for tinder and reduce the amount of kindling required.
DON’T use charcoal lighter fluid or other flammable liquids.
DON’T burn artificial logs in a woodstove unless they are specifically designed for woodstove use. Artificial logs can dirty the chimney much faster than regular wood, and can be hazardous in certain situations.
DON’T burn treated lumber, trash or anything other than wood in your fireplace or woodstove.