If you don’t have a website just yet, it is still good to have a web presence. There are a lot of easy, non-technical options to consider.
If you are selling a business service, like consulting, consider building a robust personal profile on LinkedIn.
If you are selling services like yoga classes or house repair consider Google Places, organizational or industry directories, Facebook or Craigslist. As you explore these just consider the site’s fit with the image you’re trying to project. So if your specialty is assessing the value of multi-million dollar diamonds Craigslist is probably not the place for you.
If you sell products and there are relatively easy ways launch a whole online store front without the worry of web programming or credit card transactions. Check out Amazon.com. For fine crafters and artists there is Etsy.com. There are many options so again consider where and how customers are searching for products like yours and what image you’re trying to convey.
There are many ways to test a new business without investing in a stand alone website.