Please can you tell me, am I eligible to do CPA after class 12th and from where I can get the forms and where I should give exam.

Hi there!
CPA ( Certified Public Accountant) course is very much like CA. I believe, in CPA you get better chance to work abroad. Spl. in US. This course includes not only accounting knowledge but also management touch in it.
Its a post graduation course with objectives as follow:

• To impart knowledge of concepts in Accounting, Auditing, Taxation, Business Law, Management, and Information Technology.
• To improve the ability to develop a framework for using purposes of decision-making.
• To deepen insights into practical applications of Accounting in a dynamic business environment.
• To develop appreciation of the interface between Accounting, and other areas like Economics, Marketing, HRM, Operations Management, Finance, IT & Strategy.
• To facilitate the development and growth of Accounting Professionals as Business Managers