If you want to master the art of solving the problem of 12th class maths. Then I would highly recommend that you should go through the each and every chapter of NCERT book of mathematics part 1 and part 2 solve each and every example by hand also the problems mentioned in the exercises and the miscellaneous exercises this would easily help you to master the art of solving the problems.

To be master in solving problems of class 12th maths, you should start from solving ncert books (each and every questions of examples as well as exercise) and after completing it..you can take rd sharma book and start solving questions....you must analyse yourself how much knowledge you are getting in....practicing these books is more than enough to become master...