Create Array

var myArray:Array = new Array("A", "B", "C");

Using element of an Array

trace(myArray[2]);

output is: C

Adding element to array

1- myArray[3] = "D"; // create element at 3th site of the array
2-
myArray.push("D"); //create element after the last site of the array

Changing element of the array
myArray[3] = "Changed D"

(to be continue)