there are Ground school classes available on a thursday and I would attend but I simply can't get there as I have no method of transport and there is no public transport
It is very likely that the other attendees, and the instructor, are all over 18 and will drive to the school. If you're a nice enough guy I'm pretty sure one of them is able to pick you up from either your home or a nearby station/bus stop, and drop you off there again after class. I know I would if it wouldn't be too inconvenient for me.
It does take a little initiative to sort that out but if you're doing a PPL at your age, you either have that initiative-taking skill sorted, or very rich parents (in which case you could also get a taxi...)