Starting up

That's a difficult post to reply to. There are so many factors that I don't know about. Your age, experience working for others, experience running your own business, how adept you are at working with various tools, your education, how well you get along with others... These are all factors in giving advice to your inquiry of opening up any business.

Lacking some or all this information, about the best thing I can suggest is to apply for an entry position at a yard near you. Because of the way things are going, it might be easier said than done. I've always thought that everyone should have experience working for others before they start their own business.