When we read any types of books including texts, novels, or even comics, it is necessary to capture and gain insight into the important issues of those in order to gain knowledge as much as possible. Nevertheless, the problem is that how can we find the main points, representing the most critical issues of those materials? Those things which can help the reader able to understand the messages in each paragraph and the whole information of that story most comprehensively are called “main idea”, which is indispensable for any reading at all levels.