Hello mohd sohaib  ansari

I hope you are doing good. I would glad to tell you about some roadmap to prepare for mca entrance  . For your information , I would like to inform you that i haven given nimcet and last year and scored 503 rank in all india mca.  I would say that you should follow the book arihant for mca entrances and try to purchase book instead of ebooks because in ebooks questions and syllabus are not updated. You can buy book from flipkart and below is the link of pdf too

https://pdf.wecabrio.com/arihant-mca-entrance-exam.pdf

Hope you found this answer helpful. Good luck for your future