It's time to put your thinking caps on! We have all seen the main idea questions on our reading comprehension tests, but sometimes, those questions are pretty difficult to answer, especially if you are not completely sure you understand what the main idea really is. But finding the main idea of a paragraph or longer passage of text, along with making an inference, finding the author's purpose, or understanding vocab words in context, is one of the reading skills you will need to master at some point. Why not do it now, before before taking the reading comprehension section on your next standardized test? Read on to get the details.