Hi there,
I'm coming towards the end of my Access course (English, History and Sociology) and I'm going to miss it so much! All I can say is don't panic and don't worry! Obviously the course varies from place to place but I managed to find an evening course and have been doing ok whilst still working a 9-5! The workload is manageable is you stay on top of it. I got offers from the Leicester, De Montfort, Loughborough and Nottingham for Sociology. I'm 22. You will be fine, no need to really prepare at this time. Good luck!