To prepare the exam, You should be aware with the complete syllabus & also need to prefer quality books or material. Here are some important points given below. You can follow for GPAT Exam Preparation.
Plan your studies - The first step which you need to do is plan your studies appropriately and this is only possible when you make proper schedule to complete your syllabus.
Sort out the important topics - Go through the syllabus and check all the lengthy topics and devote your maximum time in important topics only.
Comparison of your university and GPAT syllabus - Mark the common topics as the topics that are common need an increased attention as you prepare for your GPAT exam. Once you have finished creating a list of the common topics, start with your favorite topic. Choose a topic that is simpler than the others and immediately start studying it.
To know the complete syllabus & recommended books you can go through with the given below link.