Resources for Roots, Prefixes and Suffixes
http://www.virtualsalt.com/roots.htm
A great site with lists of word roots and prefixes. Their meanings as well as examples are given.

http://www.betterendings.org/homeschool/Words/Root%20Words.htm
Another great site with lists of word roots, prefixes and suffixes. Their meanings as well as examples are given.

http://www.wordinfo.info/
Dictionary designed to look up words and give meanings of any found roots, prefixes and suffixes.

http://www.epsbooks.com/downloads/articles/Prefix-SuffixWordList.pdf
A pdf/site with a smaller list of preffixes and suffixes, but a large list of words that go with each.