Congratulations on your certification! I would agree with those above who stated that working at a gym is a great starting point for personal trainers. As you know, personal training is more than just knowing appropriate exercises, form, progression, etc… It’s also about learning how to build rapport with clients, carefully modify exercises, attract and retain clients, support group dynamics and improve time management within and outside of sessions. All of this knowledge will come with time, but, in my experience, it comes much quicker when you work with other trainers and have opportunities to observe other training styles, such as in a gym environment. Building a business is a bit tough at first, though rewarding, and requires some financial stability, legitimate legal and accounting procedures and a solid client base. I would say work in a gym for a year or two while your developing your business plan. I don’t think you’ll regret the experience and extra time you’ll be giving yourself to really build a strong business foundation.