When I study or take notes I used different coloured pens or pencils for things that are important or to show a change in what we are learning.  Seeing information in different colours helps me to remember it better.

When I read I use a ruler or a piece of paper either above or below the line I am reading.  This helps me to see only the words in the sentence and keeps the letters from above or below from jumping in to what I am trying to read.