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We don`t know how qualified is this someone, but there is one moment i`m sure in. This thread was started about half a year ago, so these courses were actual a half a year ago or more. So i don`t sure that it can be useful today, may be if you study online...
When you watch YouTube games, you see just the result.
If we will just copy their play, we can`t understand why they do so, and if we get situation we haven`t seen we can`t get the right answer how to play.Yes, at first, when just copy the game style of the best players, we don't understand why it works most of the time. But, trust me, with a lot of practice, and I mean practice on the battlefield with real players, not with bots, not with your friends, but with real online players, who want to beat you, eventually you will start to understand why the style of the best in the business works.