All the documentation is stored as plan text, you could try printing that page for the raw content (minus images, formatting of course). I'd recommend creating a new ticket at open.silverstripe.org to add print styles to doc.silverstripe.org as well. https://raw.github.com/silverstripe/sapphire/3.0/docs/en/tutorials/1-building-a-basic-site.md
I guess adding print styles will not recover the images. Obviously, if this is the case and the images are lost, the value of sending the tutorial to a hard copy will be a lot less and may tip the balance to sticking to the current screen version.