For audit,surbhi bansal notes are better. and for s.m.i.t.,i would suggest icai module only as this subject requires book language. for law,ethics and communication,i think m.p.vijay kumar is very good reference book for self study also.

for audit surbhi bansal very good no doubt at all..........do from there and also follow the audit vol 2 of icai for sa's.......... a combine study from s.b & icai vol 2 will give good output as per my view

okay thanks and how much preparation does it&sm really need to just clear them. like how many topics should i do and how much time would they require?

In it sm,u just do 2nd and 3rd ch.and just learn some simple flowcharts.it is enough 4 it. in sm,u do 2nd,3rd and 4th ch. it is enough to get 40+ but to score 50+,u should have a look of last chapters in s.m. Just refer past year question papers and u'll come to know what kind of questions they r asking.. all the best.

Earlier 15 marks case study was there but from now no such thing so i think thorough knowledge of sm of all the chapters is required.specially the model's. And for IT dont go for long question study the small small topics nicely..example the topics in software chapter DBMS chapter...etc...