Hi,

In order to apply for CA earlier students were needed to registed with ICAI institute when they are in 11th of their college while after appearing for 12th board exam the candidate has to follow the following steps in order to complete the CA-
1.Commmon Proficiency Test (CPT) After 12th exam.
2.On successfully completing CPT exam candidate gets eligible to appear for the Integrated Professional Competence Course (IPCC) Group I and II and after completing these both the groups one has to go for 3 years internship and had to complete IT Training .
3.After completing IPCC groups;Internship and IT training one gets eligible for CA Final Course and after completing this course one becomes a certified CA from ICAI institute.

The above steps were supposed to be followed by all aspiring candidates;but now there has been changes like a commerce graduate scoring minimum 55% gets eligible to apply for IPCC course instead going for CPT course of CA.
As you have been completing your BAF make sure that you score 55% in your graduation than you get an direct entry for IPCC course. From IPCC course the steps are same as discussed above to become CA. Register yourself with ICAI institute to your nearby ICAI Chapter.

Hope this helps.

All the best.