As I have Interest in Graphics. Can any suggest me some certificate courses and their duration in the field of Graphic Designing?

Their are many certificate course offered by the many governmental and non-governmental institutions:

Name of the CourseCourse Duration
Certificate course in Computer Animation and Graphics1 Year
Intermediate Graphic and web6 Month
Designing Software - AutoCAD 2D and 3D2 Month
Designing Software - 3Ds Max5 Month
Certificate course in 3D Modeling and Animation6 Month - 1 Year
Certificate in Graphic and Communication Design1 Year