Hello Harsh

You need to prepare very sincerely for the JEE Exams as they are very tough, so understand the basic concepts first.

Books that you might study for the JEE Exams are

• Concepts of Physics by H C Verma (Physics)
• Cengage Series for Physics, Maths, Chemistry
• Arihant for Maths
• Concepts of Inorganic Chemistry   J.D Lee
• Advanced Problems in Organic Chemistry  M.S. Chouhan
• Coordinate Geometry  S.L.Loney
• Plane Trigonometry S.L.Loney
• Irodov

Hope it helps you.