Personal Computing On The VIC-20 (1982)
archive.org
archive.org
The manual is amazing from today's perspective. On the first few pages it has cartoons and teaches you how to use the shift key and other such rudimentary things. Two chapters or so later you are learning how to PEEK and POKE (read/set) physical memory locations. It was friendly and assumed you were intelligent at the same time.
Many fond memories of VIC, and also many times when I'm doing something horribly manually-oriented on my current PC and I think, "Geez, this feels a lot like the VIC-20!"