Hey.

One of the best all inclusive  books to prepare for the  IPMAT is -Crack the IIM Indore IPM entrance exam which is published by Pearson and written by an IIM Lucknow alumuni.

In case you require separate books for separate sections, for English you  can use Word Power made easy by Normal Lewis, Wren and Martin for Grammar. For quantitative aptitude you can use the RD Sharma or RS Aggarwal.

Best of luck