It's not an article, but this book really helped me a lot:
I found it at the library, so I didn't even have to buy it. Although, I went and got a copy later on because I like it a lot.
I don't have trouble coming up with a lot of ideas, but instead, I have trouble filtering my ideas into something solid. This book helped a lot with that. Plus, I like to write as well as draw comics, so I enjoyed the very simple chapters on prose mechanics.