Stuff from the Web
fgiesen.wordpress.com -- The ryg blog - for it's deep insights into hardware.
c0de517e.blogspot.de -- C0DE517E - for the rants that keep my bias tilted.
www.iquilezles.org -- Iñigo Quílez (IQ) site about raymarching, ShaderToy and more. The most informative scene-coder site since cubic.org.
nothings.org -- Sean Barrets homepage - with stb_image.c and similar zero-bullshit libraries.
So called facts
www.cgpgrey.com -- Interesting 10 minute videos in fact-overload-style
subbable.com/crashcourse -- Astonishingly deep videos, considering the state of the world.
www.xkcd.com -- If you don't know this I can't help you
www.smbc-comics.com -- A daily comic strip that is hard to describe...