Hello Aspirant although the most important thing you need is your self preparation and dedication , but solving modules and appearing in entrance tests are added advantage. Here is a list of books that will guide you in JEE MAINS :

JEE Main Books Important for Mathematics

• Trigonometry by S. L. Loney

• Higher Algebra by Hall & Knight

• Maths XI & XII by NCERT

• Coordinate Geometry by S. L. Loney

• Problems in Calculus of One Variable by I.A. Maron

JEE Main Books for Physics

• Problems in General Physics by I.E. Irodov

  Recommended

• Fundamentals of Physics by Halliday, Resnick & Walker

• Concepts of Physics Vol I and II by H.C. Verma

Books for JEE Main Chemistry

• Organic Chemistry by Paula Bruice Yurkanis

• Organic Chemistry by Morrison & Boyd

• Inorganic Chemistry by J.D. Lee

Good luck!!!