Help with what to do

So I’m currently a senior in highschool. Will be graduating in less then 2 months. I have 0 interest in college and don’t plan on going. But I also don’t know what to do after school. I have a few interests in things I want to do when I’m older with the main one being real estate / flipping houses. As of right now. 18m with $1000 to my name. What should I do. My girlfriends step father works as a contractor and fixes up houses. I have the opportunity to work with him, should I do this? I plan on it. But is it the right move. I see it as a way to gain knowledge on fixing up houses which I can use in the future. I don’t want to work in a factory or be a slave my whole life. I want to be financially free before I’m on the deathbed. Would like to do something where I’m my own boss. Thanks.