1. Study. Read. Study some more. Read some more.
2. Find buddies. Get good connections going early on.
3. Do NOT put ANYTHING off until the last minute! You will severely regret it.
4. Be kind to all of your patients, even if they are jerks.
5. Being kind to your preceptors in your clinicals will get you very far.
6. When doing clinicals, if you see the ambulance a mess or a hospital room that needs overturned, do it without asking. That will win you big points with the crew/staff.
7. Don't try to render patient care on your own. Just... No. You'd think this is an obvious one, but we had a medic student in my area try to do this and... Just don't do this.
8. PEE AS OFTEN AS YOU CAN AT THE FIREHOUSE. DON'T HOLD IT IN. IF YOU HAVE AN OPPORTUNITY TO GO, GO!!
9. Don't be a fly on the wall. If an opportunity knocks, fling the door open and grab it by the neck.
10. People are heavy. Do some exercises now and start building your legs up (squats are good to do).
11. Do not walk into a scenario and have the first thing come out of your mouth be, "Call 911." My biggest flop yet. (Thankfully it was a scenario..)
12. "BSI, scene safety" will be your new war cry.
13. Learn to love acronyms. They are EVERYWHERE in EMS.
14. Learn to not take things personally.
15. You'll learn your weaknesses and strengths when it comes to this field. For example, I am shy and have a hard time talking to people. With practice, though, I've figured out how to better interact with patients, family members, staff, crew, and everyone, really. Embrace your strengths and hone your weaknesses.
16. Cardiac arrest =/= heart attack.
17. It's HIPAA, not HIPPA.
18. Patient interaction is one of the biggest things you will need to work on. Practice it early on, and learn from it.
19. Take criticism well and with a grain of salt.
20. Have a bit of fun with the class and the patients when you can. It's a very rewarding experience.
That's about all I can think of. Good luck to you!