Hey paulrajaaaaah! Steemit is a place to post cool information or just interesting original content. People that do well tend to write articles filled with information or have a cool blog devoted to travel, life, and photography.
There are a million cool things you can learn here. Basics of HTML, I actually made a tutorial a little bit ago HERE. It might help.
You can enter in cool contests to win Steem/Steem Dollars which is the "stock of the company" in a way or just make good posts. Lot's of ways to become successful, but it isn't always easy. You will have posts that make nothing, just keep posting every day!
Good luck on Steemit. Have fun!