Procedure for application for industrial training

kindly provide me the detailed procedure regarding registering for industrial training under a specified company which has been given authority to engage an article to do industrial training during his last year of articleship period. In continuance to the above, I want to know that is there any requirement to inform my principal before 3 moths of joining industrial training. My articles has commenced on 1st September, 2010 and I am eligible for the industrial training from 1st September, 2012. I am in search of a good company for my industrial training. I am presently preparing for my CA Final exam which is to be held in November 2012. So, I request you to kindly solve my query and provide me the detailed guidelines.