hi mehak , first of all i am very happy to see that you got a chance of meeting our GURU shri shri ravishankar ji . i am also follower of ART OF living . now coming to your question . i would like to strongly recommend Purushottam Aggarwal sir pen drive classes for ca final costing . his classes are full of energy and you will feel positive vibes and sense of achievement after every class . i was always very excited about the next class it was great experience .