- If Wikipedia isn't your thing, you may want to try that old favourite the Encyclopaedia Britannica.
- This is a useful site if you need to type special symbols like letters with accents, mathematical symbols, or fractions. Most of the codes are hard to remember, so I've got it bookmarked.
- If you are dealing with a longer document you may want to contact the Society of Indexers.
- This site has a collection of quotations, sorted into categories.