dear student

The exam is held twice a year.In june and in December.

In order to be eligible for the examination you must have apperead for you 12th examination.

For registering:

There are two ways,

First you can apply online by visiting the website The Institute of Chartered Accountants of India

And second,you can go to the nearest ICAI branch and fill the form manually along with the Demand Draft.

hope this helps

All the best!!!