Thread: C++ coding

Let's see...:
Forget that the static pipeline even exists, and program your own shaders. GLSL is a must.
Learn your way around basic 3D math, such as vectors and matrices.
Some 3D structures are essential, for example a plane, an aabbox etc.
More on shaders, read a little about lighting effects and implementation, unless you just use someone else's.
Some external libraries may also be proven useful along the way, such as GLEW, GLM and SDL2.

Other than that... idk, practice, practice, practice.

Well you will need to be pretty good at C++ first, so how is that?