Please Help Me Wiyh Your Advice!!!

IM A REGISTERED NURSE SINCE 1997.BUT I FAILED TO WORK DUE TO RESPONSIBILITIES THAT I PREFERED TO PRIORITISED AND THAT IS MY KIDS AND MY HUSBAND.IT WAS ALMOST TEN YEARS OF SURRENDERING MYSELF FOR THEM.I THINK NOW IS THE BEST TIME TO PURSUI MY NURSING CAREER FOR LATELY IVE REALIZED THAT IAM NOT GETTING ANY YOUNGER AND I REALLY HAVE TO DO SOMETHING FOR MYSELF AND FOR MY KIDS FUTURE.I REALLY WANTED TO WORK AS A NURSE, BUT I THINK MY KNOWLEDGE IS NOT ENOUGH. FOR IT WAS SO LONG THAT I STOPED LEARNING.IS THERE AN EMPLOYER THAT WILL HIRE ME DESPITE OF MY CASE.WHAT IS THE FIRST STEP I SHOULD DO? WHERE AND HOW WILL I START? HELP ME PLEASE!! I BADLY NEEDED AN ADVICE. THANK U!!!!