You need to join acting school after 12th from any discipline. Arts is most preferable. 

National school of drama and AAFT are best school producing top alumnus and actors in Bollywood and tollywood. 

Courses need not be degree theycan alsobe certification or diploma course which is equivalent in film industries

Dear Akash Singh 

There numt of acting and modeling institute in India among them the institution which hold top positions are 

1.National institute of drama Delhi

2.film and television institute Pune 

3.R K film institute

And there are more 

Please go to there website and check the admission requirements 

Best

Dear Singh 

Becoming an actor is everyone dream because of the life the Stars are living.So have the as well.

For solving you problem I think mirrors are good 

Try to represent your self in front of a mirror or try to act 

I think if you try this you

Hello satakshi ,thanks for asking this question on this platform.now as you mentioned that you are a doctor and also want to a actor so firstly you have a backup for future now no college can teach acting to anyone . it's an art which you can develop in yourself

Hello satakshi,thanks for asking this question on this platform.now if you want to doctor as well as an actor too  then try to select college in which you will be able to get time for pursuing your passion of becoming an actress.and secondly you also know that no one can

You need to join film institute in delhi also known as Asaian Academy of Film and Television which has wonderful hands on exposure and training to various facets and is eligible for all candidates 

Eligibility criteria sharedbelow  

http://m.aaft.com/admission-2/

Here are some of the colleges you can prefer for learning Acting.

FILM AND TELEVISION INSTITUTE OF INDIA (FTII), PUNE

BARRY JOHN ACTING STUDIO, MUMBAI

NATIONAL SCHOOL OF DRAMA (NSD), NEW DELHI

INSTITUTE OF CREATIVE EXCELLENCE, MUMBAI

WHISTLING WOODS INTERNATIONAL, MUMBAI

Good Luck!

Hello Tumpa Mondal

There are various courses available for this field, also if you feel you do no need a course you can start straight away by giving auditions for different projects.