If you can afford, make a deposit and stay away from the freerolls.
1) Freerolls don't have much to do with Poker, you study the rules and apply them, but the others don't even know there are rules besides WOW, I have a pair, I MUST go all in. Flipping a coin three times gives you more probability to win
2) You might play 2-3 hours and end up on the cloud with nothing.
3) As you're going to win anyway, you need to do a deposit first to withdraw. I don't want to reply to your claims they don't pay your 1000$ because you won them before your deposit or sth. like that.
4) MAKE YOUR MONEY WORTHY Instead of playing one 1$ Tournament, I'd rather play 5 SNG for 0,20 to win a 1$ Ticket.. Most of the times you'll get more than 1 Ticket in 5 tries.