There are a lot of articles on internet business and how to get started using the internet as the only sales channel. A lot of people are using this method to start their first home based business, effective, profitable and close to no risk.
What is required to start an internet business?
That's probably one of the best things, since you don't need anything else than a computer, doesn't even have to be a good one, that's all. You use the internet to market and sell your service or product, you don't even need to run the service or produce the product. You can earn money by promoting products and services from others, this is called Affiliate Marketing.
Choosing the right product or service
While reading article on internet business you will find out that choosing the right product or service to promote is not as important as you might think. There is a market for all products, but try to stay away from the most popular ones, since the competition is very high on those and you might not be ready for that yet. Try to choose a product that relates to your hobbies or you have knowledge about, this is not needed but it's always easier to sell something you have interest in.
How to get started
Selling a service or product will require a website or similar. There are a lot of places offering premade websites for free and step by step guides how to get it up and running. You don't need to be a professional or a 15 year old kid that have been using the internet since born, to be able to get a website up. It's actually very simple.
There are some good services on the internet that will teach you everything you need to know about getting started with your home based business, they provide step by step guides and support. I highly recommend taking a look at one of those, it will help your business grow and gives you ideas and comments for improvements under the process.