@ kruthik
for getting iit , engg physics branch , u need to crack both jee main and advanced and that too requires a lot of hard work .
for that just u need to clear the concept as jee adv is a completely concept based paper ,
so, start with ncert , then go ahead with some standard books for jee prep .
like for maths u can go with a das gupta , chemi u can go with morrision and boyd , p. bahadur , and grb publication books , for physics u can go with h cverma and i . eirodov .
and 1 thing – donot repeat the mistake , practice ques as much as possible ,
take test series in every week and bounce back on the next test , analyse each and every ques that went wrong in first attempt .
AND most imp . dnt loose your personal hobbies , thats too imp for jee .
ALL THE BEST ..