For SFM you should go for ADITYA JAIN Sir’s classes. sir’s book is enough to score exemption and even more than that, you don’t need to go to any other module. It contains all the past year question papers, MTP, RTP etc. And his notes are best and very easy to understand at the time of exam revision. His books covers everything and has a vast variety of questions. And those Formula and Theory book is simply great, very helpful for the exams.