OPENGL:

2.x openGL tutorials, kind of old, but full of usefulness
http://www.swiftless.com/opengltuts.html

Modern GL, relies on shaders
http://www.swiftless.com/opengltuts/opengl4tuts.html

GLSL tutorials [shader language built into openGL] :
http://www.swiftless.com/glsltuts.html
http://en.wikibooks.org/wiki/GLSL_Programming/GLUT

Wikibook containing a bunch of GL things
http://en.wikibooks.org/wiki/OpenGL_Programming

[A BUNCH OF D3D STUFF, CONCEPT AND MATH IS THE SAME, STILL WORTH A LOOK AT]

Anything from this website:
http://www.braynzarsoft.net/index.php?p=DX11Lessons

[A few useful ones from said website]
Loading an MD5 model:
http://www.braynzarsoft.net/index.php?p=D3D11MD51

Skeletal animation using MD5 model:
http://www.braynzarsoft.net/index.php?p=D3D11MD52

Bounding volumes:
http://www.braynzarsoft.net/index.php?p=D3D11BOUNDINGVOLUMES

Bounding Volume collision:
http://www.braynzarsoft.net/index.php?p=D3D11BVCD

Sliding camera collision [can be used with models] :
http://www.braynzarsoft.net/index.php?p=D3D11SlidingCamera

[END OF D3D STUFF]

Anything from this page too:
http://www.wildbunny.co.uk/blog/

Notable ones:

Physics engines stuff, nothing too in depth:
http://www.wildbunny.co.uk/blog/2011/04/06/physics-engines-for-dummies/

More collision detection [2D] :
http://www.wildbunny.co.uk/blog/2011/04/06/physics-engines-for-dummies/

Continuous collision detection:
http://www.wildbunny.co.uk/blog/2011/03/25/speculative-contacts-an-continuous-collision-engine-approach-part-1/