The original source for me was a friend in college that used to always get his reading done in record time. He was the first one to explain to me about turning off the voice in my head. From there I read many articles on the subject over the past decade or so.

These are just the tips that I personally found worked for me and others I know.

I'll try and do a better job giving sources for images next time.

As a side note I no longer speed read during pleasure reading like a sci-fi or fantasy novel. I also never do it before bed. I found it took away from the relaxation and could be counter productive to the goal of making myself sleepy.