Encyclopaedia Britannica's Internet Guide. If you're not sure which search terms to use, or you're not getting good results with the terms you have input. Try using a search engine that offers concept searching. These look for related terms and concepts, such as Excite . If your search term is a phrase or a name, use quotation marks around it.
Some search engines distinguish between upper and lower case letters.
When in doubt, use only lower case letters. These are only general guidelines. Ask a Reference Librarian if you have any questions about using the Internet.