Actually i am interested towards engineering but I have I do not have much knowledge about it

I'm glad you asked a specific question here Ambuj.
Now, i must tell you that you should definitely learn programming. That's one of the things.
You want to become an engineer, so you'll be studying Maths, Physics and Chemistry for the two years of school. So if you're at all interested, just study the basics of physics from any book of your choice. And maths too. This is not necessary, but beneficial.
If you're looking to join a coaching institution for JEE, you can do it early if you want. That's another option if you're looking to start your preparations early.

Plz refer some books for JEE

For foundation