I have to win $2000

Do you think I can do that with gambling, but I have only $100 as starting balance and I have to do it until 1st December. It sounds unbelieavable, but I will try, because I need that money

Yes casino whoring will give you a good shot at that... done it myself, and know many others.

My advice to you is you should always stick to the blackjack(if allowed). About clearing the wagerin requirements...usually by  going to casinos cashier you could see how many hands you have to play yet..if not you could contact customer support and ask them, or you could use more traditional method:paper and pencil 

I am not so good on blackjack, but this game is really simple, the highest card wins, its around 48/52 for the casino, because when there is war you stake another unit, but you win only one if you win, but anyway wars happen rarely.
There isnt cashier like in rtg casinos, its a lot more different. I have betting history, but I am lazy to count all my bets
All I want to know if the WAR is available for clear the bonus, I will wait someone that played there to confirm it.

blackjack is simple to learn, and the house advantage is not 48/52(as you said)..its around 0.5%...playing BJ is the safest way to clear WR and win some money...i posted both basic and advanced blackjack play in general discussion...check it out, and if you have any questions , plz be adviced to ask them....  
P.S. i advice you to practice BJ playing just for fun... all casinos offer play for fun.

I won even more than the bonus so I am so happy now I will move onto next casino after I receive the money. What are your recommendations?

how much you won??
i suggest you to play next at william hill, inter casino, CON(888), bet365...etc choice is yours 

I will sign in William Hill tonight, hopefully I do the same there