Using OpenGL

[Darren via Digitalmars-d-learn]

I'm trying to teach myself OpenGL but I'm not sure how to set it 
up exactly.
I used "dub init" to create a project, I downloaded glew32.dll 
and glfw.dll and put them in this folder.  I added 
"derelict-gl3": "~>1.0.19" and "derelict-glfw3": "~>3.1.0" to 
dependencies, and imported them in the app.d file.  I add the 
load() and reload() functions where appropriate (I assume).

I can run a simple window program and it seems to work fine, but 
I notice that's when all the functions begin with "glfw".  If I 
try to follow a tutorial for loading a triangle, I get errors 
when trying to build.

Do I need to link an opengl.dll file, too?