Whether you are a trainer selling a service, or a tack dealer selling a product, one thing is for certain, you need to advertise. You need to get your name or product out there. Nobody is going to buy a product that they don't know exists. While word of mouth is a wonderful way to advertise, it only works with a client that is ready to buy a product or service now. If they are looking to utilize your product or service down the road, they most likely will have forgotten your name, and may go to your competitor, who's name is more recognized. The best way to advertise is to keep your ad consistently in front of potential clients so they won't forget your name.