Okay, i decided to make my first contribution.
Many people probably know this, but a few of my friends didn't so I'll post it just incase.
After you have an account made, find a famous Youtuber's channel (Fred is common) and go on there saying something like:
SUB for SUB! (This one works pretty good most of the time, also, you can look for people on there that posted that, and sub them, and they should sub you back.)
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Will sub you/comment and rate your videos if you sub/rate/comment my videos. (Work's more often, but takes longer to complete.)
Or, you can also just advertise your video:
Hey! You all should check out my great video! It will be one of the most funniest things you have EVER saw!
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Hey all, i just made this really cool video about World of Warcraft! It can teach you to make up to 1000 gold an hour! If you like it, please comment!
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Please comment on my video! I'm in a contest for $50 to see who can get the most comments with my brother!
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Extremely sorry if something like this has been posted. As I said, most people probably know this, so please don't get mad at me.