PROBLEM WITH AFTER EFFECTS

After learning the basics of after effects i went back on it the other day to  continue my ongoing animation but nothing was animating.  This left me confused and annoyed.  But after many hours of clicking and researching i found out that i had simply not clicked a button that needed clicking to animate the camera about the Null object.  I over came a problem by research and patience on the matter.  At least now i know how to solve the problem if it occurs again.