The 1st edition was Das Guru Book, then the 2nd and slightly updated edition was in English as The Guru Book.
There was supposed to be a heavily updated 3rd edition around 10-ish(if memory serves me) years ago but a PDF of it was leaked to the internet so Ralph never published it sadly.
I remember that; it was in 2008 and i did sign a petition to have it published anyway - to no avail as you can see now.
