After landing at Antalya Airport (AYT) you walk or take a bus to the terminal, queue for passport control and then collect your luggage from the belt. How long this takes depends on the time of day and how many flights land together; in the summer peak it can be noticeably longer than in spring or autumn. Keep your passport, any documents your airline asked for and your hotel address ready in one place.
Once you have your bags, follow the exit signs through customs into the arrivals hall. Our Antalya Airport arrival guide describes the terminal layout in more detail.