Ask about warranties when purchasing furniture. You should never purchase a brand new piece of furniture without a good warranty. Ask about the kind of damages covered by the warranty. It is best to purchase a warranty issued by a manufacturer rather than by the retailer since these warranties usually cover more things.
Beware furniture that seems to inexpensive. It is always great to get a good deal, but not at the expect of quality of construction. You will spend more money frequently replacing cheaply made furniture than you would if you had spent a little more on a quality piece in the beginning.