These are from an unofficial series on how to write an essay for literature courses, but much of the tips and info applies to other subjects. These articles can also help anyone writing essays about comic books, by the way.
How To Avoid Unintentional Plagiarism on Essays
How To Find Topics for Literature Term Papers
Asking Research Questions for Literature Essays
Finding a Research Problem for Literature Essays
Electronic Resources for Literature Essays
Doing Library Research for Literature Essays
Each in the series is self-contained, but you can read them in order, too. As I crank out more, I'll add them to the list here.