Hi,
Its never late for starting something afresh. Also doing CA after graduation maybe helpful for you because instead of doing articleship for three years it is reduced to one year. So in short you will be giving final exams approximately at the same time as other regular college going students. Also since you have already completed your graduation then you will have added benefit of knowing about the CA subjects before hand. So it should not be difficult for you to clear it in first attempt. Forget about everything else and just start preparing for your groups. As right now you may not get the material you require so you can download the Study material from official website of ICAI www.icai.org. It will be helpful to you.