Think Barney has covered it to a tee.
What I would say Den is take in as much as you can. Physiology and the understanding of what goes on goes along way in supporting the issues the users have with the equipment.
Learn from your colleagues, never be afraid to ask (anything), never be afraid to say " I don't know", never work outside your comfort zone.
My experience has been that the job is ever changing, ever diversifying and always different (on a daily basis).
If possible make use of outside (and internal) training.
As a matter of interest, is where you are working local to your location.
We're a friendly bunch, if you need any help or suggestions, just ask - welcome and good luck
