That's a difficult one! It really depends on what type of office you go into. I think you would need to get some form of computer qualification (ECDL - European Computer Driving Licence) is a good all-rounder and some colleges offer great deals on fees if you lack certain qualifications. You could try contacting Learn Direct to see what's on offer or try your local further education college. As for job role most office work will involve telephone contact and sometimes personal contact with the public as well as finance, typing, filing etc. As I say it depends on where you want to work. Good luck.