Hello Aspirant,

See some standard books are used for preparation of JEE-Main and such books are not available for free as their is copyright issue so you will have to purchase them. For your reference I am enlisting down some best books for preparation of JEE-Main 2022 :-

@Physics

• Concepts of Physics-H. C. Verma
• Fundamentals of Physics-Halliday, Resnick and Walker
• Problems in General Physics-I. E. Irodov
• University Physics-Freedman and Young
• Understanding JEE physics series-DC Pandey
• Problem In Physics-SS Krotov

@Mathematics

• Higher Algebra-Hall and Knight
• Coordinate Geometry-S.L. Loney
• Differential and Integral Calculus-N. Piskunov
• Calculus and Analytic Geometry-Thomas and Finney
• IIT Mathematics for JEE Main & Advanced-M.L. Khanna
• Course in Mathematics for IIT-JEE-Tata McGraw Hill publication
• Problems Plus in IIT Mathematics-A Das Gupta
• Trigonometry-S L Loney

@Chemistry

• Modern Approach to Chemical Calculations-RC Mukherjee
• Organic Chemistry-Solomons and Fryhle
• Concise Inorganic-J. D. Lee
• Organic Chemistry-Morrison and Boyd
• University Chemistry-Freedman and Young
• Physical Chemistry-N Awasthi
• Arihant's Practice Book Chemistry for JEE Main And Advanced-R.K Gupta

You can also check out the JEE-Main knockout package for preparation of JEE-Main from the link given below :-

https://learn.careers360.com/knockout-jee-main-april/

I hope this information helps you.

Good Luck!!