Hi! I've just finished A2 Sociology and am hoping to go on to study it at uni
By the sounds of it, you're not intimidated by the emphasis on extended writing and the extensive independent reading required by essay subjects, which is great if you want to study Sociology at A-level!
I don't know how much you know about the subject, but I'll just go for it and try to tell you as much as I can as best as I can. So, Sociology is basically the study of society; how we shape it and how it shapes us. There are obvious ties with other subjects like History, Gov & Pol, Philosophy, even subjects like Psychology and English Literature.
Depending on what exact topics your college/Sixth Form offers you could study anything from Families and Households to Crime and Deviance over the course of the two-year course (but of course this completely depends on where you study).
If you have a questioning mind and are genuinely interested in how society functions and why it functions the way it does, Sociology is a great choice.
Sorry, I'm unsure what else to say really - but I honestly cannot recommend the subject enough, especially from what you've written in your post.
If you have any questions, don't hesitate!