Well, there is learnopengl.com, which although ends with creating a 2D game, the steps leading up to it goes through most of the elements for a proper 3D FPS (c

Well, there is learnopengl.com, which although ends with creating a 2D game, the steps leading up to it goes through most of the elements for a proper 3D FPS (camera positioning and movement, textures, lighting, input handling...) - the explanations are simple enough that usually combining the learnings from the different chapters is self explanatory.