Yesterday I happened to run across some very intriguing guides from Vince Gotera, who teaches at the University of Northern Iowa (and edits poetry for North American Review). Although they are not targeted specifically to MFA applicants/students recently admitted to MFA programs, I thought Gotera's background merited my mentioning the guides here.
"How to Write a Great Statement of Purpose";
"How to Get Great Recommendations"; and
"The Grad School Letter Arrives...Now What?"
Hope this helps those of you going through the application process this year!