It is really easy to write articles. There are many resources over the internet, respected, not respected… so many that you can really have so much idea about the topic you are gonna write about. It is like if you really know playing one instrument, you can play many of them just looking at them around. Writing articles is easy for someone who can write. You don^t need to be a real real writer to write articles.
This is why Google Search is amazing. Just use it. Find useful information, read it. Make a research and publish. Write articles on the internet and let people make use of those information. Writing articles is fun anyways.