There's nothing to it if you wish to start a business on the Internet
. It's much like having a physical shop where your customers can enter and inquire and get the goods or services they need-only, it's online.
The first thing you have to do is decide on what exactly you intend to market. Don't be afraid of going for something that already seems so ubiquitous, such as personalized T-shirts and custom jewelry. If you sing or make music or create artwork, you can start a business on the Internet as well. iTunes and other paid and legitimate music downloading sites have made it possible for anybody else and everybody to have their music or podcast or audiobook available for download.
As long as you have the passion for your chosen medium or product or service and you have the determination to keep it all going for your target market, you cannot go wrong with even the most common thing such as black T-shirts with white statements on them.
Once you've made your decision, it's only a matter of setting up your domain online and advertising it. Social networking sites such as Facebook, MySpace, Friendster, and Twitter can help very much in that aspect. Attract followers and fans by starting off with your real friends and relatives and letting the word spread about your business. Soon you'll find yourself far from when you first took the step to start a business on the Internet, and hopefully then you'll be successful.