The most important step is to be sure you have a properly installed fire detector in your home.
Walk through your home with your children, and look at all possible exits and escape routes.
Draw on a piece of paper your escape route & include windows & doors in your plan.
Mark the locations of your smoke detectors.
Make sure your house number is clearly visible.
This will make it easier for the fire department to find your house - especially if you're out in the country.