Airport guidelines and tips for first-time flyers

I'm really nervous about flying out for our honeymoon. We've both never been on a plane before or to an airport. What are/ is the procedure(s)? I know about the rules for carry-on luggage (3-1-1). We are flying out 2 days after the wedding in April so we don't need to worry about the new ID rule. Flying from Ohio to Miami Beach Florida. We are only bringing carry on luggage.