It’s my ritual: every time I enter a secondhand bookshop, I go straight to the Sciences section and search for old computer manuals. They’re very hard to come by, as their owners tend to throw them away once they stop using a particular device or piece of software. Manuals also happen not to be the most engaging read for most people, which adds to their rarity; few want to peruse an old IBM AS/400 handbook while laying at the beach.
