hello shubham

well every book is best in itself for the preparation,it all depends on your hardwork and efforts your are going to put.rest you can buy ARIHANT'S DELHI UNIVERSITY M.COM HONOURS GUIDE 2018 for your preparation.

some preparation tips;plan your preparaion,manage time efficiently and effectively(as time is very precious),solve mock test and practice last year solved papers to clarify your doubts(as practice makes a man perfect),and last stay healthy. :)

hope this will help you

good luck.