There are 'how to speed-read' articles out there.
When somebody who's just learned to read reads, he'll read one letter at a time and sound out each word. Later, a person will read one word at a time and string them together like beads on a rod to comprehend the sentance. Someone who reads fast is reading entire phrases in chunks and banging the chunks together in his head. You can actually monitor yourself doing this by maintaining awareness of your eye's movements as you read. To read faster, try to read bigger chunks of words at a time. You should get a longer smoother eye-movement. Then try to reduce the pause between reading one chunk and reading the next.
Success at this for me depends very much on what I am reading. The novels of Stephen King are sometimes a horrible snore, depending on my mood, but when they are not they read faster than anything in the world, three-four pages in a minute. It's a style thing, and I'll go all incomprehensible if I try to detail how it works, but you can figure it out if you compare King to something difficult to read.