After u done the check in procedure, u'll have a boarding pass. Remember the boarding time and the number of terminal, some of them are quite far away, u have to go earlier. Because once u are late, maybe u need to hire their little motor car to dash to the terminal.
U need to pass through the X-ray scan after u show the boarding pass to the custom, which in order to avoid bringing illegal things to the plane. It have some dutyfree shops after the gate, keep alert on time when u are shopping, and then, have a good flight! :-)