As you maybe already got, @Christian.Seberino did a great job and updated the ETC Technical Reference Book (ETC Technical Reference Book (Beta) (Request For Comments, Feedback, Corrections)). Currently it is in beta version. After it reaches the end version, I will begin to translate it into german and russian languages.
If someone would like also to contribute with translating into the same or another languages, it would be awesome!
As soon as it is so far, I will give a notice here.
Thanks and best Regards!