Hello

You can refer to UGAT Popular Guide by R Gupta, for quant section you can refer to Arun Sharma's Quantitative Aptitude, for English section in grammar portion-Wren and Martin and for vocab section-Word Power Made Easy.

In addition to this, go through previous year question paper and sample paper, it'll give you a fair idea about the exam pattern as well as practising it will help you evaluate your progress.