CA is a correspondence course so,you not need to take admission in any college .If you have completed your graduation then you can directly apply for IPCC which is next level after CPT.

After qualifying IPCC you will undergo articleship training under practicing chartered accountant.

After your training you will have to qualify final exam.

Thats all.

Have you completed your bcom or you are doing Bcom with CA? If you have completed your Bcom and you are interested to do CA then the criteria is:

'If you have completed Bcom with 55% by studying any three papers of 100 marks each out of Accounting, Auditing, Mercantile Laws, Corporate Laws, Economics, Management (including Financial Management), Taxation (including Direct Tax Laws, then you are eligible for direct entry without CPT exam.'

OR

'Graduates or Post Graduates other than those falling under Commerce stream mentioned above having secured in aggregate a minimum of 60% of the total marks or its equivalent grade in the examination conducted by any recognised University (including Open University).'

Once you meet the above eligibility criteria, register for the Intermediate (Integrated Professional Competence) Course and submit the filled-in applications to Offices of the ICAI.

Then you have to go for articled training, details of which is mentioned here .

Good Luck.