I didn't have a mentor who sat me down and walked me through business structures. I didn't take a course. I figured it out the same way I figure out most things: by asking questions until I understood enough to make a decision, then actually making one. But it took me four years before I ever filed anything — four years of doing work, serving clients, and depositing money into a personal account like the whole thing was a hobby. Once I LLC'd, I started taking it seriously. That's not a coincidence...