I just want to share this home study course from Stanford. I just got it and it looks good.
The title is "Everything you ever wanted to know about teaching but were never taught". It is worth 30 contact hours.
See page 16.
If you are not interested in the contact hours, you can just buy the book yourself. It is "A nurse's Guide to Patient and Family Education - No Time to Teach?" by Fran London. Publisher is Lippincott