JEE

Check predictors below :
For JEE - https://www.resonance.ac.in/reso/news/JEE-Main-Branch-Predictor.aspx
For UPSEE - https://www.shiksha.com/upsee-college-predictor

One of my friend is a pass out from IIT - Rookie and he got a package of Rs.14 crores.

You'll be awarded with 4 marks on every right response and will get 1 mark deducted on every negative response.
It's better to clear your every single concept for good marks in JEE Mains and you can join a good coaching institute for preparation of JEE Mains and Advance.
Best of luck.

You can appear for JEE after taking admission in first year of engineering. However, you are advised to check policy of college with respect to withdrawal from study after first year. Colleges put heft penalty to discourage students from doing it and also to avoid losing out revenue of seat for 3 years.

JEE mains will held in the first week of April 2017.

You should appear for JEE mains first, if you clear that exam then you should appear JEE advance.

Yes, every candidate who appeared for JEE main and has been allotted AIR is eligible for JOSAA counselling, but the seats are allotted on the basis of merit. You can fill in your choices for the spot round.
Best of luck.

You can visit the below mentioned link:
www.freeiitcoaching.com

No, it's only for JEE advance.