yep. revise everything that bog standardly happens in sport (ankle inversions, muscle strains etc), plus your kiddie pathologies (severs disease and the like). Learn how to tape as a matter of urgency. Shoulders, knees, ankles and hands. In terms of a first aid qualification i would assume the RFU have something similar to the FA set-up, a basic first aid/cpr qualification that you should probably do to cover your back. Definitely dont do it for nothing, just ask politely and behind closed doors, explain that you cant give a commitment without some money being involved. Dont expect the earth though, i get 100 a week but from talking to other physios in our league im apparently one of the lucky ones.

Notes - However you like. I have a whiteboard with the 1st team players names, dates of injuries, playing/training status, then i scribble something really basic if i feel i need to jog my memory, but generally i dont bother. If you're the only physio nobodies coming round to check your notes, nobodies going to be treating your patients but you so its pretty unnecessary as far as i can see