Make sure that you have vents in your bathroom that push moisture outside the house. The bathroom is responsible for creating most of the moisture in your home, although you should do that same for your laundry room.
Vent your clothes dryer to the outside, never into the laundry room, and make sure to clean the duct regularly.
Install and vent hood and exhaust fan over your kitchen stove to take care of the heat.
Ceiling fans are a great way to ventilate your home year round. Just make sure you reverse the direction when the season change, so your circulating air that’s the right temperature.
Make sure not to cover up vents, as they won’t work properly.