Summarizing means telling all of the most important points. Often, in English, the main ideas are in the first sentence of each paragraph, but sometimes they can be at the end or the middle. Occasionally, the author doesn't actually say the main idea, but gives you a lot of details and lets you read them and decide on the main idea by yourself. Whatever type of writing you are summarizing, the basic way to do it is the same. You read the whole thing through and underline the parts which seem the most important. Then you think about the article and decide on the main point the author wanted you to understand after reading. I tell my students to think about what the author wants you to think, do or believe. Often, there will be a sentence in the article which says that main idea. That sentence is often in the beginning of the article. Write that sentence down and include the name of the article and the author. Then you need to read each paragraph and write down the main idea. A summary does not usually include all of the examples. It includes all of the main ideas. Putting those all together makes a summary.