A Freeroll is a Poker Tournament, it means you don't have to buy anything to enter the tournament. Each person will get a 1000 chips to play and the winner gets a prize.

What you should do at this moment is, if you don't know how to play poker, google the term "how to play Texas Hold'em Poker" And read about it.

If you're confused about time zones, Click this link: http://www.pending.me.uk/cd/blu_1428015600.html
to know about how much time is left for this tournament to start.