My last placement was A&E and it's a bit of a marmite placement to be honest. You'll either love it or hate it. I hated my first couple of days but only because I was so overwhelmed by everything I saw and felt like a lost sheep following people around and being TERRIFIED to be left alone with really poorly patients (even for a second!)
By the end, I loved it.. and really considering a career in emergency nursing / critical care.
You will see so many conditions - lots of epileptics, falls, chest pain and abdo pain - you'll be sick of ?appen by the end of your placement
You'll see a whole spectrum of patients - young, old, dying, disabled, pregnant.. you name it. The placement really taught me to get to grips with my communications skills - and I would say that's a key learning opportunity really. The best way to ask triage questions, the best way to build a rapport with a patient in a matter of minutes, how to decide what information is relavent to right now and what can be dealt with on the wards etc.. Another biggie is moving and handling - loadsss of pat sliding and log rolls if you get rtas etc..
Skills wise - you'll probably cover everything. Plenty of catheters, plenty of aseptic, plenty of injections , as well as more obs and ecgs than you can throw your pants at. You'll almost definitely be involved in a life support attempt at some point and probably last offices.
I would say - try and spend as much time as possible in resus because that's where the most critical care is. I devoted most of my time to majors and resus and only spent a couple of shifts in minors just to get practice at strips and dressings and things like IM injections (tetanus) etc...
You will probably feel overwhelmed, but take in as much as you can, throw yourself into it and just ask loads of questions etc.. Any specific questions i'm happy to have a go at answering