You should not give honey to any child under the age of three. It may cause an allergic reaction or respiratory difficulties in children this young. Store honey at room temperature. It may crystallize over time, and in that case, you can simply warm it in a warm-water bath to reliquify. It is best to purchase raw, unmolested honey to receive the maximum benefits possible from the honey.
Honey is made from pollens collected from a wide area by workers in each hive.
Therefore, there will be color and taste differences depending on the kind of pollen gathered, the time of year, and the mixture the bees used. These differences should be embraced, and there is nothing wrong with honey that looks a different color than the last batch you may have purchased. Honey has an almost indefinite shelf life, as the bees remove all water from the product as it is being manufactured, and due to the fact that the honey itself is a repellant to bacteria.