Hello Susanta,In order to do a CA course, you need to enrol yourself with ICAI (Institute Chartered Accountants of India). Once you’re done with that, you have 3 levels of exams to conquer. The first being CPT. You can enrol in any reputed coaching class of your choice, or even try to do it on your own, depends on how you want to prep. After that comes IPCC. After this level, there is usually a 3 year long articleship that has to be completed with a reputed firm. Post that you can appear for your final CA exam.