Building a successful Training business takes time, consistency, and an appropriate amount of "face time". In order for people to hire you, they have to know you are actually available to work! People need to physically see you working with people.
Remember, Personal Training is as much about look and feel, as it is about hard work, nutrition, and discipline. You need to be the SIZZLE not the STEAK. Simply posting and sharing fitness related items is not enough.