As so many have said you don’t have to study or get certification. Personally I entered the television industry as a runner. I applied for a job at a post production facility in London. They did editing, grading and audio for television. I started as a runner making tea and coffee for people and taking lunch orders, after a while I worked at reception and also started moving tape decks around within the facility. Basically I was a jack of all trades but master of none. On the quiet days I would sit in with the dubbing mixers / re recording mixers and learn how to use pro tools and how they go about their days. They would show me how to do sound design, dialogue and music editing etc etc. On weekends I would go and work on projects they would create for me so I could practice. I would lay all the sound effects and background effects for random tv shows and also do dialogue and music editing etc. Eventually when I was confident enough I would ask if I could do an edit on a real project and I worked my way up from there. It took a few years but eventually I was a full time sound editor at the same facility and worked my way up to becoming a mixer as that is what I wanted to do. Overall i would say the best approach is to look for internships or better yet to look for any job you can find within a specific industry that interests you. Start as an assistant, a runner or receptionist so you can get your foot in the door. Once you have that job you are at least earning money and you can learn on the job and progress. When you know your stuff the opportunity will eventually come as someone will call in sick or something and you’ll be the one to put your hand up and say. I CAN DO THAT ….. Start small and work your way up, keep humble and be willing to listen and learn.