Skimimg is used went you want to get a genaral idea of want is in text but you don't necessarily watn to read it all. It allows you to search quickly through it, finding out what arsas a book covers ang whether it is going to be useful to you. When you skim throuth a book, turn various pointers Which will tell you about the contents of the book. In particular, look for chapter opening, supheading, introductions, and summaries.