Firstly build your concept and make your foundation after that try HC Verma TO START WITH:The books by H.C.Verma are perfect for any student aspiring to crack JEE to especially build a conceptual base. For assurance, it can be easily said that no other book is required for the same. It is strictly advised that only when you are done with Concepts of Physics by H.C.Verma, should you move ahead to refer other books. No other writer plays with force between a horse and a cart in a better way! and if u have any doubts in question ask here.... hope u like it