JEE Main Process

First, you have to fill the application form of JEE Mains, through online mode (starting of Dec. to first two days of Jan), then you can take out the admit card for sitting in the JEE Mains. In the month of March,
JEE Mains will be conducted in the starting of April itself
whose result will be declared at the end of the month of April,
If you have cleared the cut-off then you are eligible for giving JEE Advanced, for which application form will be out at the end of April to starting of May (max-for 5 days).
JEE Advanced may be conducted on 27th or 28th of May.
(Remember, it is up to you whether you want to give JEE Advanced or not. If you don't give it then also you are eligible for taking admission through JEE Mains marks in NITs, DTU, NSIT and some other colleges, but you will not be eligible for IIT's.)
In the starting of the month of June, you will get your all India rank of JEE Mains.
After all this is done, the counseling process starts.
If you eligible i.e. you have cleared the JEE Mains cut-off & scored at least 75% in your CBSE 12th then you have to fill the counseling form
JAC-FOR DTU, NSIT, IIIT, IGDTUW (only for girls), JOSSA-NIT's, IIT's, other govt. funded colleges.
Counselling process will continue in rounds and you will be allotted seats in the colleges as per your all India rank, and preferences that you have filled.
Note: Not every student who clears the cut-off get a seat in the colleges through JEE Mains. Candidates who have scored 50 to 60 marks and above the cut-off get something.