Have a will.

 (Try to get it written for free.) Not having a will can be very costly. If you die without a will, your estate will be tied up intestate and its fate decided through your state. THIS is not what you want, make sure they know what you do want. Free wills can be found through sources online but there is debate as to how good those wills are without the personal assistance from actual legal aid. If you do create your own will, be certain to get it notarized.