I'm a real enthusiast!

[deetle]

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I'm playing poker now for six month and have already lost approx. 1200$. But, hey, as everybody here, I love this game and don't want to abandon it only because I'm losing.

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Dont take this the wrong way but I would consider dropping down to .50/1.00 or 1/2. Why make the learning period more expensive than it has to be. Work your way up as your roll increases from the winnings.
You see your mistake by not folding the flop so you are going in the right direction.