Hey listen, I started going to school to become a Personal Trainer also, I graduate in April or May of 2008, find a good school to go to, I attend NPTI in Colorado, I've worked out on and off all of my life, got into boxing, and running to stay fit, when you go to school, they train you on other things not just the obvious. At NPTI they teach you Nutrition, how to retain clients, and Business Plans, how to design your own studio, and work you with seniors, the endurance training blew me away, the last two years I screwed around a lot, and with the stress of my job,(retired now as of July 2007) I packed it on. For a short guy it really hurt my body, being 5'5" tall, and weighing 265#, in 4 to 5 months I've been able to lose 99#, I workout part of class, 2 hrs 4 days a week, take off one day and swim or run the other two days. I'll be 50 next year, and want to make this my new career, I am a former medical provider who worked for a HMO for 30 years, when I joined the company I weighed 108#, what I got out of my company was lots of stress which led to over eating, diabetics, big gut, and bad posture. If you go on their site it will give you a list of certifications, for Personal Training, Nutrition, Kettle Bells, and such. Good Luck man!