Before you buy a coffee table you should ask some yourself how you want the table to function. While a coffee table often ends up being the focal point in a room, it does have other functions than simply looking good.
Also, since there is a great variety in materials, you should pick one that best fits your needs. For instance, you most likely don't want a glass coffee table when you have toddlers. You wouldn't want an easily destructible surface or finish either. Before you buy your coffee table, you also have to pick shape and size. Do not miss out the cheap and quality pieces at online furniture stores.