As you would with any other service provider, DO YOUR RESEARCH:
It's like shopping. Don't know who to learn from? Ask around.
Ask your instructors where they go for coaching. Go to conventions and shop around - take the workshops of a number of instructors. See
who appeals to you and who would fit your personality and learning style.
When you get an idea of instructors you are interested in,
try them on (just like going to he fitting room). Do your research - check out their website, credentials, resume, videos.
Much of your success and enjoyment of dance lessons will depend on the relationship you have with your instructor. BUT, in order to get the best value, and the most appropriate advice to meet your goals, consider these factors when choosing an instructor: