OFFLINE

Here are a few links to some good resources when
you're trying to determine which homonym should
be used:

http://www.alphadictionary.com/articles/confused_words.html

http://public.wsu.edu/~brians/errors/errors.html

When in doubt, always look the word up in an online dictionary
because published book dictionaries become outdated quickly.
We recommend the Merriam-Webster Online Dictionary because most
court reporters in the U.S. prefer that dictionary.

Feel free to add more links to this thread.