While some of it is simple, some of it can be a bit confusing for a first tine flyer. I am positively sure almost every person on this app could get from a parking lot to a terminal. But they may not know what to do at a Security Checkpoint or what you do before that. It's just in Chronological order so you know what steps go where.
[spoiler]At least, I hope you can get from the parking lot to the terminal...[/spoiler]