First you clear your all concepts , then try to apply them .... and practice is most important ...

Physics can be on your fingertips if you follow some simple strategies while preparing it.First of all you should clear your concepts very well .secondly you should do multiple readings of that topic which you have read that will help you to clear your concept more. thirdly you can prepare a notebook in which you note down all the formulas as it will help you to revise well during your exam time .Then you should master in practicing. you should solve minimum 100 questions from each chapter and least 10 to 15 questions of each topic. At last but not the least you can use other reference books like professor HCV ,DC Pandey these all will be proved more than sufficient to you