I have a great desire to get in to MIT for my graduation.I love the video lectures and notes they publish on MITOCW.I m now 18,just completed my 12th.Can anybody help me with any information regarding this.
Where are you located? In the US, if you just finished 12th grade, you should have applied last fall. You can still apply this fall though, and you will be considered for entry in the fall of 2012. The site looks like it has everything you need to know. Just remember that admission is very selective and sometimes even the brightest students don't get in.
There is no insane entrance exam to take. Just the SAT I and two SAT II tests. The SAT II subject tests should be in Maths and in another science subject. I suspect you're doing the JEE as well, in which case, the SAT II tests shouldn't be very hard for you.
On another note...an 18 y/o with an undergrad master's degree wishing to go to MIT...