Most technical books I buy are sold by DRM free sites: informit.com, oreilly.com (although they don't seem to be much in the book selling business anymore), pra

Most technical books I buy are sold by DRM free sites: informit.com, oreilly.com (although they don't seem to be much in the book selling business anymore), pragprog.com, raywenderlich.com, or single book sites such as Building Git (https://shop.jcoglan.com/building-git https://shop.jcoglan.com/building-git) or Haskell Programming from first principles (https://haskellbook.com https://haskellbook.com)