In order to secure good rank make sure your basics are clear. You can take help of NCERT books for that. Work on your concepts and build your fundamentals strong. Make proper plan to follow. So, you can get proper time for revision.

You Should know about the complete syllabus, focus on important topics. You can refer previous year papers to know complete exam pattern and level of exam.

You can also solve MCQs related to important topics Solve as many as mock test series to analyze your preparation level and to know your strong and weak areas.

All the Best!!

Here are some of the preparation tips you can follow.

1. Make a detailed plan

• Draft daily schedule of subject topics to study.
• Prioritize the topics that require more time and those relevant to the subject.

1. Understand Basic Concepts

• Before starting JEE preparations, know the JEE syllabus clearly and study the initial chapters well, since they cover the basics .
• Evaluate your knowledge on basic subject topics. Move ahead only if you feel confident enough in the basics.
• Make notes on tough topics, and topics you find important, topics that have more weightage in JEE 

Good luck!