...there are many campaigns that are no longer active or have relevance. The learnings from that can be made public. Sure, that could have value. It would requ

...there are many campaigns that are no longer active or have relevance. The learnings from that can be made public. Sure, that could have value. It would require a long term pre-publication plan that says, "At some point, I'm going to trash this successful campaign so that I can write a book." I don't know that you do that though, do you? If you're making $10,000/yr with AdWords, would you really trash that so you could make $10,000/yr with a book that's going to be "stale" within a year or two? FWIW Perry Marshall's basic guide to AdWords is a good start for most people.