Purchase a sealer to protect your chiminea and apply it according to manufacturer's directions. You need to reseal it every 6 to 12 months.
Place your chiminea in a permanent location. It's best not to move it because it can crack.
Put about 4 inches of sand, pea gravel or lava rock in your chiminea. Light a small paper fire and allow the sides to get slightly warm and completely cool off.
Light a few more small fires using paper and a bit of wood, letting the chiminea cool off each time. This lighting will allow the clay to adjust to the heat.
Get a cover for your chiminea if it didn't come with one. It will last much longer when protected from the elements.
Consider getting a cast iron or aluminum chiminea if you live in a cold damp climate or you may have to store your clay chiminea inside during the cold season. Cast iron or aluminum is easier to care for.