Interestingly enough, in one of my classes we did an activity on reading comprehension. My teacher gave us a short story and told us to underline things that we thought were important to the story. I thought this activity was really beneficial because I was able to see what my classmates underlined, what they thought was important. It got me thinking about reading comprehension and how students can and will interpret stories differently. Obviously there are certain texts where there is only one main idea, but at times there can be some discrepancy between main ideas.
Overall I think the most important things to do when reading is highlight or underline the important things. This will help you get to the point and allow you to comprehend the story better.