Hi,
I have tried night school in the UK as well as other learning material such as Rosetta, What I feel works best for me is an online tutor via a webcam. I pay £15 for an hour and the tutor I use is excellent. She is based in Newark and I can give anyone her details if intrested.
I find it much better having a one to one lesson and usually have numerous questions for her by the next lesson.
Phil