Dear Sabita, if you are looking into Financing and Investing fields, nothing beats being a CA. There are 3 phases in the course of CA. CA Foundation, CA Intermediate, and CA Final. As you are still pursuing your 12th, you need to start with CA Foundation. For appearing CA Foundation, you should have completed 4 months of the study period and cleared your 12th class examinations. To qualify for CA Foundation, you should have scored an aggregate of 50% in all the subjects and 40% in each subject individually. CA Foundation exams are conducted twice in a year in May and November. Once you clear CA Foundation, you are then eligible to pursue your CA Intermediate. Those candidates who have a Bachelor's degree can skip CA Foundation and directly join CA Intermediate. And you also have mandatory articleship that you need to complete. Then you become eligible for CA Final. By the end of the course, you become an expert with finances, taxes and investments. You can apply for companies which are into Investment Banking. Good luck!