I like print books with a website offering errata, and some minimalist recorded lectures on the material, like Gilbert Strang writing on a blackboard to further

I like print books with a website offering errata, and some minimalist recorded lectures on the material, like Gilbert Strang writing on a blackboard to further give insight to the book's material. Even with pdf-tools in emacs, navigating a PDF is still too much wasted time compared to flipping pages plus I have to stare at a screen for hours. The SICP texinfo copy I read being an exception where it was the only time I preferred the digital copy to print.