The main idea of a text is the central point or message that the author wants to convey. It summarizes the primary focus of the content, helping readers understand what the text is about. Identifying the main idea allows readers to grasp the essential information without getting lost in details. To find the main idea, readers can look for key sentences, often located in the introduction or conclusion. Supporting details, such as examples or facts, help reinforce the main idea. Understanding the main idea is crucial for effective reading comprehension and critical thinking.