We all know what animation is ; it is special effects or lets say visual effects.
Many would relate to special effects or cartoons, but it is more than that. 

Visual effects involve the integration of live-action footage and computer generated 
imagery to create environments which look realistic, but would be dangerous, costly, or 
simply impossible to capture on film.

Many perceive a career in this line . 
There are many online courses and  [url="http://theiceinstitute.com/courses-vfx.php"][u][b]part-time animation courses in Mumbai[/b][/u][/url]

One learns many minute technical details in these courses like 

Digital Design
Camera Tracking 
Color Correction
Title Graphics
Audio - Video Synchronization