You talking to me, Praveen?
Well, I think it depends on the persons. But anyway the vocabulary you learn easily is the vocabulary you NEED/or are INTERESTED in.
So I'd say first learn what you need in your everyday life, and then or at the same time, investigate in fields that appeal to you.
When I was a teenager, all my vocabulary came from English/American songs, I spent hours translating them into French. I never read the newspapers, because that didn't interest me.