Hi. "Managing AFS" the book came out 21 years ago, and I just asked the publisher for a "reversion of rights" back to me which they have just said they'll do. That means that I should be able to do what I like with the text once I sign the paperwork.
Frankly, not quite sure what to do. I could just put the text together in some format on GitHub pages. I know that there have been many changes with AFS in the past two decades but if there's interest, I'd be happy if you wanted to fork a copy or do something like leanpub.com or whatever. (BTW, I won't get their diagrams - which were terrible anyway) Richard