Have your chimney cleaned at least once a year by a professional chimney sweep.
Change your batteries in you smoke detector twice a year. Remember "Change your clocks, change your batteries."
Leave the house then call "911" from a safe place.
Check every closed door for heat before opening.
"Stay low and go" crawl while exiting the house if smoke is visible.
Have an escape plan, and a safe meeting place away from the house.