In the last module,one was introduced to directories and search engines and how they are constructed. You performed searches through category selection and a simple keyword search.
The lessons in this module illustrate more advanced searching techniques.
By adding symbols and operators to your search queries, you can screen out many of the irrelevant results that match a keyword-only search query.
Searching services offer many of the same options for advanced searching (although some support more than others) and will let you select an Advanced Search or Power Search interface with many more choices.