Clothing Line Starting Up

I am focused on the tshirt design above all else. I'm hoping to market to 14-24, but am wondering where I start advertising. Any tips?

There are tons of free classifieds online, some sell your email addy over to other people though so sometimes its hard to find a legit one. Its taking me trial and error over afew years to get it right. Try to focus on ads that can make you the turn around you need if you invest large. Right now I am doing search engine ads but they are a little costly and I'm not sure if your budget could work with that in mind just starting out.

try advertising them around business directories online.

what about the pay per click search engine options? Then perhaps when you get going you can optimize to something that will get your site in the top of the list when people search.