In preparation for the cold winter months ahead, take the time to get your firewood properly seasoned and ready to use in your fireplace. Freshly chopped firewood can have up to 50 percent water content inside, which, when burned, can create air pollution and build up creosote in your chimney. Allowing the wood to properly season -- dry out -- can give you a clean source of energy for your home and is easy to do. Place the firewood in an area that is protected from the elements, and stack it to allow air to circulate. And if you think the firewood needs further protection from the elements, place a tarp on top to protect it.