To get admission in IIT you need to clear the entrance examination IIT-JEE. For preparation of IIT-JEE you need to analyze your capabilities with respect to 3 subjects Physics, Chemistry and Mathematics. You also need to get the help of good mentor who can help you to solve problems in these subjects by tips and tricks .My cousin got the help of Sumit Upamayu sir. With his guidance he was able to clear IIT-JEE . He shared a link with me which i am sharing with you. Hope it helps.