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There have been lots of users who gave you links to helpful topics on how to earn merits via improving your post quality; and specific tutorials to reach those purposes.
Hence, I have only one warning message for you:
Never fall into merit bussiness, which has been abundant in local boards, including Russian. You should stay away from this sort of bussiness because your account might be under high risks of red tags, bans, etc.
Yeah, this is possible happen if he surpasses the rule given don't make underground activity on the forum.
I'm not giving him an idea to do illegal actions into this at least OP aware of these kinds of business inside the forum that strictly prohibited.
To OP, so, if you are satisfying there answer you may now lock this thread, just go scroll down after my post right side just click "lock topic".