Here is a list of some of the important books recommended for the preparation of JEE Main examination:

1. Mathematics:

• Course in Mathematics for IIT JEE by Tata McGraw Hill publication
• Problems Plus in IIT Mathematics by A Das Gupta
U can order online Hard copy of this book (latest edition) here: https://amzn.to/3S2esHl
• 21 Years's Chapterwise Topicwise (2023-2002) JEE Main Solved Paper Mathematics
U can order online Hard copy of this book (latest edition) here: https://amzn.to/3RVk7z3
• Mathematics for IIT JEE by M.L. Khanna Vol-1 & 2
U can order online Hard copy of this book (latest edition) here Vol-1: https://amzn.to/3YyJNEe & Vol-2: https://amzn.to/3xkC2p9
• Algebra by Arihant publication
U can order online Hard copy of this book (latest edition) here: https://amzn.to/3XvK0Xa
• Play with Trigonometry by SL Loney
U can order online Hard copy of this book (latest edition) here: https://amzn.to/3jXi7cZ
• Integral Calculus by Arihant publication
U can order online Hard copy of this book (latest edition) here: https://amzn.to/3IppfIk
• Differential Calculus by A Das Gupta
• Calculus by J. Edward
• The elements of coordinate geometry by S L Loney
U can order online Hard copy of this book (latest edition) here: https://amzn.to/3XuQdCM

2. Physics:

• Problems in General Physics by I.E. Irodov
U can order online Hard copy of this book (latest edition) here: https://amzn.to/3IorVGs
• Practice Book Physics for JEE Main and Advanced by DC Pandey
U can order online Hard copy of this book (latest edition) here: https://amzn.to/3IlaEOi
• Physics for JEE (Main and Advanced)-Vol 1 and 2 by Resnick / Halliday / Walker
U can order online Hard copy of this book (latest edition) here: https://amzn.to/3E8TXTD
• Concepts of Physics -Part I & Part II by HC Verma
U can order online Hard copy of this book (latest edition) here: https://amzn.to/3YwBcld

3. Chemistry:

• Concise Inorganic Chemistry by J.D. Lee
U can order online Hard copy of this book (latest edition) here: https://amzn.to/3K7rO37
• GRB Numerical Chemistry by P. Bahadur
U can order online Hard copy of this book (latest edition) here: https://amzn.to/3E7YJ41
• Modern Approach to Chemical Calculations by R.C. Mukherjee
U can order online Hard copy of this book (latest edition) here: https://amzn.to/3Il5Qsf
• Concepts of Organic Chemistry by O.P Tandon
U can order online Hard copy of this book (latest edition) here: https://amzn.to/3xjFOPR
• Organic Chemistry by Robert T. Morrison and Robert N. Boyd
U can order online Hard copy of this book (latest edition) here: https://amzn.to/3lCksKF

These books are a starting point and may not be exhaustive. Students are advised to choose books based on their individual learning style, strengths, and weaknesses. Additionally, students are also advised to practice solving previous year question papers and mock tests to improve their problem-solving skills and test-taking strategies.