Read the comments on the steam guide as well I pointed out a few small errors in that one. Also there is this one, it's the definitive steam loco driving guide, and contains a section on german signals in chapter 3.31 https://steamcommunity.com/sharedfiles/filedetails/?id=247333283 Working on a PZB guide and might do that about signals after that, but both might take a good long while.
