The technique you choose will depend on the purpose for reading. For example, you might be reading for enjoyment, information, or to complete a task. If you are exploring or reviewing, you might skim a document. If you're searching for information, you might scan for a particular word. To get detailed information, you might use a technique such as SQ4R. You need to adjust your reading speed and technique depending on your purpose.
Many people consider skimming and scanning search techniques rather than reading strategies.
However when reading large volumes of information, they may be more practical than reading. For example, you might be searching for specific information, looking for clues, or reviewing information. Harder - Web pages, novels, textbooks, manuals, magazines, newspapers, and mail are just a few of the things that people read every day. Effective and efficient readers learn to use many styles of reading for different purposes. Skimming, scanning, and critical reading are different styles of reading and information processing.