Hi, I have brought a book & also I have read about 2 -3 tutorials, but still don't understand about cllasses. What I need to know is how to use them, most of these books only tell you the basic stuff. If you had a player object and a map object, which one would hold the players position? Also how would the player object and Map object communicate, If the player moves how would the Map update it's self on where the player is.