With MCA under you, it would be easy to learn AUTOCAD, it is also important to know your aptitude, do you want to stay with you plan of opening up an office of yourself. It would mean long term commitment and resources for the same as you be like a start up company. I would suggest you arrange a chance to spend some time with big architect consultancy and firms that design houses, where in you would get valuable sight and an opportunity to observe how it works, it would be good.
Depending on the region where you stay, you can check on the internet and see you if can get a placement as a student or observer.Some of the websites that encourage freshers are, Architects4Design.com, http://www.letsintern.com, you can approach them with your personal request.
If you have some funds see if attending architecture seminars would help you. It would give you a good chance to meet many people in a short period of time and plan your future.
FOAID- Festival of Architecture & Interior Designing - Mumbai (Dec 1-2,2017)
361 Degree The Design Conference,Mumbai(16017 Feb 2018). Focused on urban building designing.
If your budget is limited, at least approach local architects to get an idea about the chances of having a good career with AUTOCAD ( instead of your own firm you may better off to be part of a the designing team of a reputed firm before you break off to go solo).