The Atlassian Community can help you and your team get more value out of Atlassian products and practices.
IM TRYING TO ADD IT ,STILL IM UNABLE TO
Please don't SHOUT - it is hard to read and some people find it quite rude.
I can't tell you a lot about this, other than "Go to trello.com, sign up for an account (or log in as an existing one), and start creating boards and items". Although there's a lot more to Trello than that, that really is how to "add trello and use it".