Welcome @ketikasharma, heres a pretty good condensed guide for using steemit made by one of the best @aggroed
https://steemit.com/vocabulary/@aggroed/steemit-tips-steemit-is-easy-all-you-have-to-know-is-the-following-list
Also if you're entirely new to crypto currency (like steem) i'd suggest educating yourself on its safe use practices to ensure that you keep all of the money you earn on here safe.
Good Luck!