Hello Hemanth

Company Secretary (CS) is one of the principal officers of the company. They keep the company's records; complete the company's tax returns; advise the Board of Directors of their legal obligations to ensure that companies comply with statutory legislation.

There are no such colleges for Company Secretary.
There is only one main body i.e Institute of Companies Secretary of India (ICSI).

If you want to pursue your career as CS then first get yourself registered with ICSI for Foundation program which is the first level in CS. After registration they will send you study material by post at your registered address. It is a correspondence course, no such regular colleges are there. The exams are held twice a year.
You can take coaching for these exams from various private coaching institutes or study it yourself if you are intelligent.

Best of luck