[header] How to advertise [title] Know your audience. [step] The single most important thing when it comes to effective advertising is to know your audience. Think about it. 
The ad that appeals to retired men is very different from an ad designed for teenage girls. [substeps] If you are not in tune with your audience, you will be unable to create an advertisement that resonates with them in any way and your product/service will go unnoticed by a huge proportion of your key market.