Know the WHY, not just the HOW. I'm sure your instructor staff will drill this into you ^_^
Understanding the A&P is big too - goes with the above advice.
When it comes to treatment down the road - go simple before advance. No reason to do all these fancy procedures when you can do simple BLS treatment and that keeps your patient stable.
ABC's or CABC depending on your patient - take care of those, your patient will make it to the ED.
Like everyone has said - keep ahead of the game. Don't get behind. Ask questions if unsure. Once you get behind or the class has moved on from a topic and you don't understand, it's hard to get back up to speed if no one knows.
Be confident in your treatment and field diagnosis - there are times where you will have to refer back to Medic SWAG (Scientific Wild A** Guess

), but don't let that mindset rule you. Be proficient, know what your signs/symptoms, be able to process what is going on in someone, and be flexible. Not every patient of COPD or CHF or whatever will all be perfect, classic textbook S/S.
Lastly, textbook medicine is not real life medicine. Learn to adapt. Learn to think on the go and be 10 steps ahead of what is happening so you can, hopefully, prevent that patient from coding or going into respiratory failure/etc.
Good luck - do you best and we'll see you on the other side!
