Hi 

For quantitative appitude and verbal reasoning and reeading comprehension .

One of the best book  to prepare for IPMAT is 

"Crack the IIM Indore IPM entrance exam " published by Pearson and written by IIM Lucknow alumuni ,

Along with this you should also practise some last year's question paper this will help you the strategy to give your idea about the  preparations and also you will recognize your strength and weakness.

Thanks