The most important factor in reading for speed is concentration on the material before you, ignoring any distractions. The greatest advances will come from overcoming the bad habits that you have developed over years of reading for both recreation and education. Overcoming these can easily double your reading speed. The easiest habit to deal with is "backing up" - reading something two or three times. This habit develops from lack of concentration, but it becomes so ingrained that it cannot be overcome with concentration alone. The exercise below prevents backing up to help you overcome this habit. The more difficult habit to break is "sub-vocalizing", saying the word in your head - which many of us learned to do so that we wouldn't "move our lips" when reading. The exercises above are helpful, but most people still have to concentrate to avoid it.