Some of these products are electronic in nature, and are simply emailed to someone when they make the purchase. In other cases, after you make the sale, someone else ships it. In either case, you aren't sidled with having to deal with a customer. All you do is sit back and wait for the commissions to start rolling in.
You need a blog or a website first, though. Instead of just putting up a generic site about you or your life, you need to pick a subject, and preferably a niche, that will attract a lot of people with money to spend. If your niche is precise enough, you will have droves of people at your site every day, clicking on your links, and making you profits.
For example, you may be interested in weight loss, but there are already a ton of weight loss sites on the internet. So, making it more precise, more of a niche, is a way to bring in more traffic. Maybe you might want to write about weight loss for post-pregnancy, or weight loss for teens - the opportunities are endless. The real key is to get as precise as you can and still have an audience.
If you were to write about exercise, a generic fitness site would develop no traffic at all. However, if you wrote about swimming for fitness, or swimming for weight loss, you might get more people to your site. You have to find a market that is untapped, that has customers who have money to spend, and a need that needs to be fulfilled.
With the economy being as tough as it is right now, the sooner you start on this type of business, the sooner you will be able to create financial security for you and your family. Plenty of people use blogs and websites with affiliate links to make a lot of money. Affiliate and associate programs don't cost you anything at all. You don't have to pay to join up and sell their products, and you will get a commission off of everything that you sell for them. Some affiliate sites will even pay you for the clicks that you send their way. This is really a very easy way to earn some extra money.
Even you can start to earn money now, regardless of your computer skills, and regardless of your typing skills, by building a blog and selling traffic to other sites.