What are the key documents to have in my MPF?

Everything

You are probably a brand-new Private and I believe an "MPF" is your Military Personnel File so here are some of the items I know that You will need: High School Graduation Certificate/Degree, SAT/ACT results, civilian Medical Records-for allergies and shots/ Dental record. Next of Kin-name, address, home phone, work, cellular, and email. Plus, any other addresses that You think will be helpful. Place all information in a folder or binder that is easy to carry/pack. I hope this helps. Lewis