I would say first identifying their purpose for reading the text so they can look for whatever it is. (for example, answering short answer questions they might want to read the questions first and then read the text and look for the answers)
Perhaps next would be maybe getting away from any distractions so they can read the text clearly. (so if your in a place where a lot of people are talking they might want to go to a more quite room)
I hope that helps!
- mathwizzard3