Education is the way to become a professional in any field. I recommend anyone interested in becoming a fitness instructor look into ACE courses, ACSM courses, or any other NCCA accredited certifying organization. There are schools near many major population areas for this as well. I used to teach for a post secondary school for fitness instructors when I lived near Denver, CO.
I teach a complete course for fitness instructors (classroom/practical experience) now through my business in Hawaii. I also teach CECs for those already certified. The CECs are definitely a write off so why not come take a continuing education vacation on the Big Island of Hawaii. The instructor course for preparing to get certified may also be, I never tried to get my first cert deducted off my taxes. Anyway, check out my website, www.hawaiifitnessacademy.com if you are interested.