1. Start a blog. Choose a niche that you have an interest in or passion for, and then get busy writing articles for it. You can look at online blogs for ideas on how to set your own blog up. Monetize your blog with affiliate products such as Google Adsense and Clickbank. Whenever someone clicks on an ad or purchase the product you make money.
2. Blog writing. Write content for other blog owners. With millions of blogs on the Internet today you never run out of potential customers. You can specialize in writing articles in an area you have knowledge of. You can also learn how to quickly do research online and write blog articles on multiple topics.
3. Affiliate marketing. Join affiliate programs for free and get paid to perform specific actions for the affiliate merchant. You can make money when people click on ads, fill out lead forms, or purchase products that you are selling. You can also recruit affiliates into two-tier affiliate programs and make money when they sell products.
These are quick and easy start up business ideas that anyone can do regardless of where they live in the world. It's not difficult to learn how to turn these business ideas into profitable businesses. And you get the benefit of working for yourself from home.