(Changing the subject away from the cut)
I applaud Fabiens' work. I have been following since his blog days on the source code analysis of games and I'm so happy he's writing books on the matter. I will fully support him going forward.
However, the first edition of the Wolfenstein Black Book left me a bit miffed. It had many grammatical errors and even some layout awkwardness that would not pass an editor's review. I understand the reasons: English is not his first language, this was a work of passion, etc. But it still mars the experience. I assume the second edition fixed those; I wish I had waited.
I've been eagerly waiting for his book on Doom. But I recommend waiting for the second edition, once he had time to take the readers' feedback into account.