How to get traffic to online shop in 2015?

[WhatTheGox]

So i just set up a clothing site, how do i get traffic in 2015?

Last time i needed to get traffic for a site was back in 2007 and i just spammed all over youtube, it worked pretty good actually lol.... im assuming doing that in 2015 is a bad idea or not?

What strategies can i do? really clueless here... i come up with ideas like just replying to potential customers on twitter, this might be a little lame, i really dont know.

Should i just buy google adwords credits?