Not to mention that “sign up” conjures up images of signing your name on something, entering in to some kind of contract. What am I signing up for? What are m

Not to mention that “sign up” conjures up images of signing your name on something, entering in to some kind of contract. What am I signing up for? What are my obligations? Do I need a lawyer present? Maybe safer to just close the window.. I know that’s not the intent, but that’s the mental image. Signing up means joining the army to me.