Thank you very much for your letter. Sorry I haven't been writing for so long time, but, unfortunately, I was very busy.
I think you'll know some of your neighbours as the years goes by. However, if you want make that happen earlier, hang around the neighbourhood, go to some bar, pub maybe - you'll meet a couple of friendly people for sure. If that wont help you, go to the closest neighbour of yours and ask if you can borrow salt. Then you say you're new there and a new relationship is done.
I think those pieces of advice will help you. Don't be shy and... good luck.
If there's anything I can do - I'm always here for you.
Przykład, bardzo łatwo wpleciesz wątek o wakacjach