In todays world online advertisments are a must. The internet makes it possible for you to reach people in more locations then ever before and produce more revenue no matter what you are selling.
So one simple way to start is to make sure you are marketing to only those that are interested in what you have to offer. Put yourself in your customers shoes, What words would you use to search for your item?
Google AdWords is a great example of pay per click advertising. Some times this type of online advertising is referred to as PPC. A link is placed on a page triggered by a keyword and you only pay for this type of advert when someone clicks through to your site.
Another way of advertising online is text link ads. This works by letting you select you keywords within the text of other sites out there and drive those people to your website.
Classified Ads? No not the ads found in newspapers. These are found online and are usually free. Use online classifieds to gain exposure for your site and funnel traffic to it. Go after sites with proven traffic or sites that have a huge network of partners they syndicate to, you want as much exposure as possible.
Now its time to get started. Use some of the cheap methods listed to start generating traffic.