This page is a short guide to search services on the internet. There are also some specialist search services, like Columbia University's Libraries' service for finding etexts among various etexts projects, and Web-Cite, for online scholarly papers. Power search lets you use boolean operators, and the proximity of keywords as ways of refining a search. Best for getting an overview of the available sites, rather than a needle in a haystack. Searches include ftp sites and Gopher sites, although your mileage may vary.
Searches can be for concepts or keywords.
And this can only be a good thing. Both ftp and gopher sites are included. Best for getting the best of pages, or a general overview of the pages relevant to a subject area. Start browsing from these pages. Complex and simple searching are possible.