Purdue Owl – Purdue Owl is a reliable and comprehensive source for APA and MLA citations. Remember that APA and MLA are two very different styles. You must ensure that you are searching under the correct format. If you ever get overwhelmed, go to the search box and type in exactly what you are looking for.
Khan Academy – Formal education will make you a living, yes… but self education can make you a fortune! -Sy Kaleo
Virtual Salt – A comprehensive listing of rhetorical devices and their definitions