Help

sridhar 

Have u done coaching ? If yes then stick to it. If not then get SD bala which will clear ur concepts n practice few important questions from Practice Manual. Cover different types of problems but no need to practice each n every question. Do not postpone, the preparation of SFM. Start immediately. If u take the subject in Aug or sept den it is very difficult to cope up. All the best :-)

practice manual plus module plus rtp wil prove better than any ref book

Go with S. D. Bala

And for more practice of questions get N shreedhar