Hello aspirant,

Your profile suggests that you are Engineering aspirant in 9 th standard.

It's better to start prepration as early as possible. As you can start it from 10 th Class itself. You'll get lot of time to prepare. First know the syllabus and study the basic concepts thoroughly.

After completion of 10 th standard, you can get more explosure to the subjects in 11 th and 12 th standard.

But first you need to crack JEE Mains to get qualified for appear IIT JEE.

Check below mentioned link for JEE Mains Syllabus.

https://engineering.careers360.com/articles/jee-main-syllabus

You can take coaching for IIT JEE after completion of 10 th also. You can either go for online or offline coaching.

I'm providing you with the link to get online IIT JEE Coaching.

https://learn.careers360.com/foundation-jee-main-april/

For Syllabus of IIT JEE, go through below mentioned link.

https://engineering.careers360.com/articles/jee-advanced-syllabus

To get more details about online IIT JEE coaching visit below link.

https://learn.careers360.com/

May this information was helpful to you.

Best of Luck!!