This is for girls specifically, but given the changing taste of men in regards to their looks and grooming process, even men can choose this as their career. A basic short-term course is enough to start on your own or join a branded salon and rise up the ladder. Enhancing or upgrading your skills will anyways remain a constant companion throughout your professional life, but you can learn while you earn!
Focus on excelling on what you do rather than only earning money. This will ensure that you never stay out of work and always earn more than your expectations!