You can also look into advertisers such as Citydeals, Amazon local, Groupon etc which offer revenue sharing options with no cost up front and you pay nothing out of pocket. They collect leads and revenue and pay you a portion of that. It’s not necessarily a great money maker but it gives you exposure and can help you secure new clients and build your client base.
You can also advertise and hold free educational seminars about specific topics, and then introduce your services at that time when appropriate. Along with this idea, you can partner up with some sponsors (various specialty doctors, massage therapists, chiropractors, nutritionalists, sporting good and fitness stores, etc) which you can build a network system for mutual referrals and have another professional help you with the seminars.