The MacroReference contains references to large areas of knowledge, FAQs where available, and pointers to relevant areas of the MicroReference. The MicroReference contains short bits of information and references to specific subjects, sometimes with instructions on finding the specific subject inside a general reference. For older students. Daily articles introduce new topics in the arts, humanities, science, and technology, and provide links to the very best sites for further study. The Probert Encyclopaedia - Serious reference source with over 60,000 fully hypertext linked entries covering the entire spectrum of human knowledge.
Content is aimed at journalists and researchers.
Compton's Home Library - Compton's Encyclopedia Online is a complete research tool with 38,000 searchable articles and current events. Encyclopedia Britannica - Complete Encyclopedia Britannica available completely free to anyone. Articles from 70 top magazines, a guide to 125000 best websites and much more. The Archive of Useless Facts and Trivia - Built since 1994 by thousands of visitors, and containing the world's most complete encyclopedia of useless information. Consists of 15 volumes with the collaboration of more than 2,000 specialists.