Hiya, Im Nat, im 18 and im a british student

As my title says im really interested in immigrating to the USA, ideally the mid west like around minnesota. Im just somewhat confused about how exactly I would go through the process of gaining a visa and a green card

I finish my A Levels this year, and I dont plan on going to university. Im just having trouble with what visa to apply for, and how to do it. im struggling to find much online like who i should contact, and how i can do it myself.

I will be working in retail during my gap year to save for everything, im just confused about what i should be doing in the meantime

Thank you for reading!!!