Hi Mary:
US SAILING has a complete program to teach people the art of teaching sailing. Class's are available all over the country. Of course there is a cost associated with the class and more importantly a time constraint, it takes 4 days to go through the class. It can be done in two week-ends though. When you pass the class you become a Level 1 instructor which includes a secondary liability policy for one year. You will also need CPR and AMR certifications.
You would have to be a member of US SAILING as well.

Some years ago when I was on the training committee we decided there was no difference between Multihull and Monohull beginner sailing. This eliminated the controversy over having two different Level 1 positions. Absolute, never been on a boat before sailors don't know any different so monohull/multihull isn't a problem.

What is so great about the Level 1 program is our youth Multihull sailors are becoming instructors through this program. This allows them to make a little spending money during the summer. They are also starting to fill the ranks of sailors at the Alter Cup.

Best regards,
AJS