yeah I can imagine that swedish is a really hard language to learn and we have some letters that you dont have aswell!
I live on the other side of sweden, near gothenburg. I can also imagine the trouble in the tube, pretty rough place, especially alby.
I didn't learn too much Swedish it is not a straight forward language and everybody speaks english so it makes you kind of lazy... Yeah Alby was a rough place, but still better than some areas of the UK