I travel quite often, always with the same airline so I have my routine pretty much down. I can see why a first timer would be confused or have a poor experience here the airport is HUGE. Be prepared to WALK especially if you are flying in.
Tons of places to eat even if you are not actually flying somewhere so whomever is dropping you off can park and go have a bite to eat with you.
If you're getting a rental good luck you have to take a shuttle to get to the rental port and it's usually busy so be prepared to wait a bit.
If you're flying in each and every time the bags take FOREVER to get the baggage claim port on average it's about a 10 minute wait BEFORE they announce that your bags are being loaded to whatever baggage claim port.. So once again be prepared to wait. Oh not to mention this is after about a 10 minute journey to the baggage claim area after you get off your flight.