Writing resource ideas:http://owl.english.purdue.edu/owl/
Latin and Greek roots:http://grammar.about.com/od/words/a/wordroots.htm
List of prepositions:http://www.chompchomp.com/terms/preposition.htm
List of transition words:http://emedia.leeward.hawaii.edu/lrc/handouts/Revised_Transitional%20Words%20worksheet%2004%203%202007.pdf