Hello Kawa
I agree with Idie and Dave. I just turned up at my local meeting in Northants and they were friendly and welcoming. We don't just talk about fixing BSAs, but when we do, the info is solid gold. I've had a great deal of help from the forum too, in the two years I've had my BSA. Like you I knew nothing but Jap bikes, and the world of 1950s engineering is certainly a bit different from them.
Roger