LWJGL 3D I want to create a 3d game

I have been trying to code in OpenGl 3D however I have no idea where to go I want to learn how to make a voxel engine or some sort of 3d game where you walk around
I cannot find many good tuts online
as I have searched through lots of yutube videos but they just code stuff but dont tell you whats it for… can someone help me? skype tommohawkaction