Using and accessing MovieClips within any Flash project is very important. As a Flash developer I need to be able to access any MovieClip that I might create on this timeline or in an entirely other swf file on a completely different time. In face if I want two separate swf files to communicate with each other while embedded within a HTML page, then communicate they should. The only thing Flash needs to know to connect objects together and pull other objects apart, is the unique name (instance name) and the location (root) for each object or item.
MovieClip – within a MovieClip (with name) control from the main time by giving the MovieClip a name.
movieClip.gotoAndStop(vaule);
Recreate the following tutorial of bouncing ball
Event Object
Working with more than one event at a time.