American marriage customs call for people to wear wedding rings on the fourth finger of their left hand where the "vein of love" resides, according to My Online Wedding Help. Other cultures, however, frequently employ different traditions....
Depending on where one lives, the ring fingers of the left hand have the ring.
The wedding ring go on the fourth finger of the left hand since this hand is less employed, hence the ring is best preserved. and the thumb is too active a finger, and is too commonly employed with either of the rest.
The wedding ring usually goes on the ring finger of the left hand, which is the second to last finger. Some countries use the ring finger of the right hand instead.
The wedding ring is to be worn on the fourth finger from the thumb on the left hand. Normally the engagement ring after you are married is place on the outside of the wedding band. That could be a personal choice though.
The finger that the wedding ring goes on depends on what culture you are from and the cultures customs. Customarily in European societies, the wedding ring goes on the third finger from the thumb on the left hand. In Eastern cultures, the ring is worn typically on the right hand on the third finger from the thumb.