Along with GATE CSE books, you can also refer to the important topics and the syllabus to help in the preparation process to go through with the given below link.

GATE CSE Books

Hi Greeshma,

I have listed the best books for GATE in CSE-

• An Introduction to Formal Languages and Automata by Peter Linz
• Discrete Mathematics and its applications by Keneth Rosen
• Introduction to Algorithms by C.L.R.S
• Database System by Elmasri and Navathe
• Computer System Architechture by Morris Mano
• Operating System Concepts by Galvin
• Data Communication and Networking by Forouzan
• Compilers, Priciples, Techniques and Tools by Ullman

Hope this helps. All the best!!