[citanul]

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First, where can i learn about tracking my return on investments and so forth?

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You need to read the FAQ, stickied to the top of the forum.

Poker tracker (not free) will help you with some of this stuff, but so will SNG tracker, free. I'd recommend SNG tracker, people love it. And it's free.

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Second, does anyone else find the lower limits more difficult to beat than the higher limits.

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I'm sure some people do, but it's either a flaw in their perception or a flaw in their ability to adjust to their table conditions. The players at the lower stakes just are plain out worse. As in the maximum acheivable ROIs are higher as you move down stakes. The games should be "easier" if you have the ability to play against bad players.

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Where do i learn more about these things.

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You've found the right place.

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And what kind of bankroll do i need to start stepping up in limits?

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Again, FAQ.

citanul