THERE IS NOT MUCH TIME FOR JEE . SO I WILL SUGGEST YOU FOR STUSYING THE BASIC CONCEPT BOOKS I.E. THE NCERT BOOKS PLZ STUDY ALL THE TOPICS IN NCERT AS WORKING IN IITD I KNOW THAT THE BASIC CONCEPTS OF NCERT ARE MOST USE FUL AND AFTER STUDYING NCERT U SHOULD DO THE PREVIOUS JEE PAPERS AND THE PREVIOUS ROORKEE PAPERS U MUST SOLVE THESE U GET A GOOD RAK INJEE.