Its our first time I hope its not insane huge and I get lost

I've read it stated this way...if you're a local and you're off to drop off or pick up, it's difficult and huge and crazy to navigate.
If you're a tourist, and you have a service dropping you off or picking you up, including the car rental shuttles, it's easy as pie.
Since I've only been there as a tourist (thank you MaryJo for being the local to pick me up last March!) I have found it to be simple simple. Of course, I do always feel funny that I'll get caught on video b/c I'm walking near a celebrity being filmed by TMZ, LOL, but that's a minor concern.
We've so far only flown Alaska while leaving, and that's weird b/c that terminal and airport (at least) has you walk your bags over to the conveyor belt instead of putting them on a belt behind them! So that's odd.
oh and the elevator is hard to find in the terminal, b/c the terminals are these round things, and you can go in circles trying to find something.
But other than that, it's really basic when you're just a tourist.
I also have a silly thing against SNA b/c my flight was delayed something like 3 hours, and that was AFTER I got to the airport 2 hours early. It was late, and most shops/restaurants were closed. Booooooring.