Hi

you just need to do three simple steps:

1. Make your concepts crystal clear: HC Verma will be very good book for this.
2. Mug up all the neccesary formulas : This is also very important. Many of the questions in jee mains are directly formula based. You can’t derive all the formulas during the exam if you want to complete it on time.
3. Practice: Dont try to solve so many books. First solve complete HC Verma (objectives + subjectives) , then move to study material of any leading coaching or DC Pandey. Also solve past year papers in the end.