Not knowing what bike or carbs you have, I'm guessing they're the type with the choke lever right on the side of the carb body (left side actually). Lever parallel to the ground; "up" is choke on, limited air flow into the carb. Lever perpendicular to the ground "down" is choke open, full flow.
And don't worry, last spring when I brought mine out of cold storage, I had a brain fart and ran mine backwards for a day. Started wide open and ran closed and wondered why it was sooooo difficult to start and ran soooooo crappy. Duh.