You are not late. I started the campaign some weeks ago, but we are at the beginning (in the middle of "the eternal boundary").
I knew already of that shard, and I am trying to use those translations, but in the end I don't care too much. I kept most part of the slang as it is in English. I the end the pc are primers and thrre is no reason for them to know those words. If they want, they will learn with time.