How can i Advertise my youtube video for free.?

Me and my freinds uploaded a school video project, its not really super good but i want a few extra veiws for the vid and my channel where should i advertise. The video link is here: www.youtube.com/watch?v=JFDgOhIIgsc...

I'm so gonna watch this.
I'll also post a link to my tumblr & send it to a couple friends.
you could try making an account on twitter and posting it with some interesting hash tags. also you could try going on comments on YouTube and asking for people to view your channel. try getting a few top comments, people usually check those channels out c:
post it all over fb, & good luck!