 Guitar techs trained on the job may learn their skills by playing in amateur or semi-professional bands as a guitarist or bassist, working for music stores as a guitar repairperson, for clubs or bars as a sound engineer, or by maintaining equipment for PA system rental companies.A typical career path for becoming a guitar technician via on the job training is to begin by volunteering in a bar band and then working for low wages in a regional touring act or a minor touring act.As they gain experience and add skills, they may seek out better-paying jobs with higher-status touring bands.