Question

when to start IIT-JEE preparation?In which class and how

Answer 1

if its a your dream to get knowledge about that little from any person or book get starts ite preparation from any time or class

Answer 2

4 jee preparation u study from class 9 that's called pre- foundation. and in 11th u have 2 choose maths subject.

in +2 class u need 2 join a coaching class 4 it's preparation.