best book JEE mains preparation maths

Hello student prefer NCERT to build your basic concept and make sure you do each and every example and exercise questions before jumping to a reference book.
After completing ncert thoroughly refer to your coaching materials or reference book as mentioned below -
Hc verma concept of physics
Op tondon chemistry
And specially for mathematics subjects
Rd sharma book or arihant practice book for Jee
Most important do 5 previous year question paper


You can also subscribe for jee knockout package to prepare and qualify the Jee main examination.
Refer to the link mentioned below - https://learn.careers360.com/knockout-jee-main-april/

Feel free to comment if you have any doubt
Good luck

R.D SHARMA might be a good option.....
Even CENGAGE and ARIHANT are good