Welcome to Knitting Help. We do speak different Englishes in the U.S. (where I and many other here are) and the UK but we usually manage to communicate in spite of it.
I love that knitters all over the world have things in common and we learn from each other.
Do you have a yarn stash? You could play around with needle sizes with yarn you already have and see how close you are to gauge. From that you would have a better idea of what yarn to look for.