Skimming is high-speed reading that can save time and help the readers get through lots of material quickly. It is different from other kinds of high-speed reading, such as previewing, and scanning. By skimming, the readers can get general sense of passage or BOOK, not specific details. The goal in skimming is not to read the text thoroughly, but it is used to find out the kind information that the readers seek, and if it does determine what to read more closely.
Thus, in skimming the text, a reader needs to practice in order he or she can learn the key words and phrases which can cover all the material he or she is reading. To do the skimming, the reader should go through a passage quickly, jumping over parts of it, in order to get a general idea of what it is about.