Congratulations! I concur with all of the above. Make sure you and your contact info are easy to find online:
– Facebook (create a business page)
– SweatGuru (also gives you a waiver you can use)
From there, I would suggest gaining experience at a gym to help build your network. You might also consider training a friend for free or reduced cost so you can use them as a case study for client success stories, and chances are they will refer new clients to you, too.
Training people at a park or very visible location will help you attract clients – people will naturally ask questions and inquire about your services if they see you out and about.
You might also volunteer at fitness events like races or expos to help grow your network.
If you’re working on your own, you definitely want to have a solid waiver in place.