Great job! You have taken a major step in defending yourself and your family. Your not done! Now it is time to get qualified tactical training in order to teach you how to handle your firearm in a high-stress situation. Defending yourself is never as easy as shooting at a stationary target when your adrenaline is poring out of your ears.
Find qualified training that will teach you how to draw from concealment and how to handle your firearm in a self-defense situation.
DoubleActionCHL.Info can provide this training, along with many of your local ranges. I also highly recommend attending and participating in a IDPA.com match.