Hey Tom - sounds like you did a good job for your first MVA.
As for the alphabet soup:
BSI = Body Substance Isolation = Gloves, Gown, Eye Protection, and Respiratory Protection (Mask)
PPE = Personal Protective Equipment = Typicaly refers to Structural Fire Gear or EMS/Extrication/Tech Rescue style gear, helmet, boot's, etc.
Also - one last tid bit of advice (and it may be a regional thing) but careful how you refer to yourself as a "Medic" Some places it's generic for any level EMT and some places it's *reserved* for EMT-Paramedic's and some of them can get a bit testy about it.