Affiliate marketing is simply marketing someone else's products. If you have a home based business, that is NOT affiliate marketing. However, if you started a blog about a topic related to your business you could also use affiliate marketing on your blog.
For example: If you are in a health and wellness business you could set up a blog (for free at blogger.com) and talk about health and wellness topics. Don't talk specifically about YOUR BUSINESS ~ but talk about problems related to your business and provide solutions to those problems. (those solutions of course can include a link to the product that helps solve the problem)
People come online not looking to buy a product or join a business, but they DO come online looking for a solution to a problem. If you can provide that solution you will convert your readers into sales.
You could look at commission junction (www.cj.com) or clickbank (www.clickbank.com) and find other products that would relate to what you are blogging about. Within a post to your blog or in your sidebar you could provide a link to that product.
Doing this allows you to attract new people to your business ~ both business builders as well as customers, and allows you to make some extra money as you go.
If you would like more tips and tricks about affiliate and internet marketing check out my blog. Internet Marketing for Mommies
I believe every mom should be able to stay home with her kids if that's what she wants.