Mary, Good Morning. NESTA is the direction I went with my training. I chose NESTA because of the Adventure Bootcamp Business (ABC) opportunity along with the other programs and business opportunities once you pass the exam. It took about 2 months to learn the material to be ready to take the exam (passed on the first round; great presentation of material). www.NESTAcertified.com. All the responses here mention credible and solid programs. Every company offers a little different information and benefits. Since passing my exam, I have received great support from all the staff of NESTA and ABC; highly recommend!