Dear Student,

Indian Institute of technology, India offers different programs of UG and PG for different course. If you want to get into IIT after 12 then you have to give the entrance examination of JEE main and JEE advance, before that you need to fulfill the basic criteria like

1. You have to complete your 12th from any board of India with Physics, chemistry, Math's as a compulsory subject.

2. You need to score minimum 75% or above to get a seat in IIT.

At first you need to clears the JEE mains examination one you have cleared that then you have to appear in JEE advance exam. When you clear that exam also the you have to take part in JOSAA counselling and they will allot you the course and college to you according to your preference order.

It will be more better you start your preparation from class 11th as mostly syllabus is come from 11th and 12th, better if you take coaching classes, teacher guidance.

Best of Luck!!!