If you're not an instructor, why would you want to teach your loved ones? If you're taking uncertified people out diving, you're putting their lives in danger. You're not trained or equipped to spot or handle an emergency. Would you train your loved ones how to skydive?
Take them out snorkeling and get them a book on diving, but if you want them to learn how to dive and you really love them, sign them up for a course and join them in their training.
After that you can teach them underwater photography, fish identification, buoyancy, how to set up and maintain their gear, reef conservation, navigation, night diving, boat diving, drift diving, etc.
Anything that requires actual training and/or certification, leave it to the professionals.