You should definitely know about these... kinda like an alternative to Wikipedia.
"Online Reference Shelf"

- Topic/concept overviews
- Published, authoritative sources
- TIP: keep your search simple — 1 or 2 words
Example Encyclopedia Articles:
Alan Mathison Turing (1912-54)
Turing, Alan
Weatley, Phillis (1753-84)
Wheatley, Phillis
1773, September: Phillis Wheatley is Manumitted