Another book reference that I really liked: Trans Kids and Teens: Pride, Joy, and Families in Transition
Two books to recommend:
https://www.amazon.com/dp/0393713997/ - This one covers all of the physical and emotional stuff that could happen to both you and your family.
https://www.amazon.com/dp/1573447889/ - This one specifically is for your parents to hear from other parents who had trans children.
PFLAG, if they have one locally.