Well, what's your budget? There are many ways, but the cheapest and easiest is simply post it on Craig's list. You can design a nice flyer and save it as a pdf and post that as the ad. There's a way it comes up as the whole page. Not sure exactly how to do it but if you google how to post a full page ad on craig's list, it should come up with instructions.
Another inexpensive way to recruit is to put ads in newsletters like church's, schools, club's etc. Also, ask if any retailers or restaurants will let you post flyers in their windows. Post flyers with tear off numbers in store buletin boards.
But, if you have a budget, I would suggest a website, facebook and twitter. This gives you a venue to do trade banner ads. You can choose who can post on your site and pages and who you want to show your ad. This way it's mutually beneficial and you can reach the right people. For instance, dance apparel shop would probably happy to do a cross web banner trade.
Plus, you can follow twitter and facebook pages where you think you will find your target audience and "Like" them, make comments, etc. to drive people to your pages and site ultimately calling you to get classes.Publicada el 15/12/am