Here are two areas I’ve had success with:
Writing PLR-I have my own PLR site, http://PLRVillage.com and writing and selling PLR can lead to a steady writing income. There are several good courses out there that will teach you how to sell PLR and create a business with it.
Another place I’ve had success is http://Constant-Content.com This is a site where writers post articles and set their price. When the articles sell, the site takes about 30%. Ive written and sold articles here over the last few years. This is a great site because you can set your own price. They want high-quality error free work. If you are doing research for non-fiction, you can take your research and create new articles with it and submit to Constant Content.
If you are interested in getting paid for writing online, I also suggest you check out this guide I picked up recently:
There are a number of places here that pay you for writing. This guide is up-to-date, and mentions several sites and services that I had never heard of before. Writing online is a great way to increase your writing income.