If you want to prepare for JEE Main from zero level you can start your preparation from NCERT books. It will help you to clear your basics and to build your concepts strong.

You should be aware of the full syllabus and important topics. You should complete your syllabus first and focus on important topics. You can solve as many as MCQs for your practice. You should refer previous year papers to understand the exam papternand level of questions. You can also join mock test series for your preparation to analyze your preparation level and to know your weak and strong areas.

All the Best!!

I would suggest you to go through the below points -

Physics – 1. Learn Formulas Thoroughly: As you study Physics, note down all the formulas and remember them properly. 2. Learn Derivation of The Formulas: Learning the derivation of the formulas helps in memorizing and understanding them better. 3. Concentrate On Scoring Topics: Once your basic concepts are cleared, concentrate on the scoring topics like Mechanics. Pay extra attention to Thermodynamics as it is common to Physics and Chemistry. 4. Diligent Practice: Solving JEE Main practice papers regularly is a must. Practice only when you are not stressed.

Chemistry - 1. Improve Your Concentration And Application Skills: In Inorganic Chemistry, concentrate mostly on the concepts, the processes, and their applications. 2. Study With Patience And Attention: Be careful and patient while studying Organic Chemistry. 3. Practice Reactions: Practice the most important topics, equations, mechanisms, and related problems regularly. 4. Regular Revision: Chemistry seems to be confusing to many students. Regular revision of Chemistry is a must for better retention.

Maths - 1. Conceptual Clarity: Clear the basic concepts of all the chapters. Maths is full of formulas. In order to remember them by heart, understand and practice the derivations of the formulas regularly. 2. Take Mock Tests: Taking full-length mock tests help in improving your speed and accuracy. It helps to build stamina. 3. Solve Practice Questions: Solving JEE Advanced practice papers after completing every chapter is a must. 4. Solve Previous Years’ Question Papers: Practicing from previous years’ question papers is a must when you are preparing for IIT JEE Maths.

Hope this helps!!!

 firstly go through with NCERT  books to clear your basics. it will help you for basic knowledge & concept related to area of the study.

some of the important tips you can follow.

Make a Preparation Strategy: To obtain the success you should follow a systematic approach. You must prepared a detailed schedule about the topic, chapters & subjects.
Work on Your strengths & Weakness: It is important to analyze your weak areas of your study. Once the strengths & weakness have been identified then you can put your efforts to improve your that areas.
Solve Previous Year Papers: go through with sample papers & its regular practise will get a clear picture of the type of questions asked in the exam.
Group study: Group Study help you to expand your knowledge and also help to get each others reviews & suggestions on difficult topics.
Join Mock Test: Mock test will help you to analyze your performance & proper time management.
Books You can prefer.

Physics

• HC Verma Both Volumes
• DC Pandey

Chemistry

• RC Mukherjee [for physical

Maths:

• Every book from arihant
• ML Khanna / McGraw Hill Publication

Good Luck!