On the importance of books, manuals, and documentation. Just how important is that "stuff" to you and the enjoyment of your personal collection or system(s)?
Several years ago I took note of how valuable the original owner's manuals and 3rd party books are to owning, operating, and reminiscing-about a classic computer is. The manuals often go into detail about the finer points of firmware operation, like editing functions or the options on a command or its range. They also help you determine if a system is working correctly or not. They are the repository and memory aids for information you may have forgotten over the years.
In thinking about the Apple II I found/find great comfort in the "book's voice" which talks to me the same way as it did when I was in grade school. The author's tutoring voice.
I love the Apple II manuals published by Apple. Feels like there's an instructor right beside you. Information contained in them is suitable for a beginner and at the same time is a good reference for developers in some cases. They have register listings, monitor listings, example code, and well phrased lectures.
When I got my Apple II+ it came with something like 800 pages of information spread across 4 or 5 manuals. It was the Family System, and it had a comprehensive "getting-started" guide that took you step-by-step for wiring everything up.
These manuals not only had rote procedures, they also described how the product worked in layman's terms. And to a kid that was fantastic. It set the framework, the groundwork, for further self-paced learning.
Today you struggle with online documentation, getting consistent and reliable access to it. With no guarantees it'll be there in the future. Let alone a 30 year future! Not to mention it's overly simplistic and tells you how to push a button by way of cryptic hieroglyphs.
In fact not too long ago, Adobe killed the on-screen help files of Acrobat X through their Adobe Help Center. One day I went to reference it, look something up, you know, and POOF!! It said the product was no longer supported. And the documentation was gone!
So immediately I restored from a backup and captured the help files and archived them away. And turned off the update process so they remain in-place for the future.