I tried using the SuperBible in order to learn OpenGL a few years back, but it always seems to be a bit too dense for my taste. Since OpenGL itself is an API specification and usually you would learn the basics of 3D graphics before delving into it, I recommend using the fantastic Learn OpenGL site (https://learnopengl.com). It goes through the basics of OpenGL from ground-up and touches on more advanced techniques, such as shadow mapping and deferred shading. It is a fantastic site and a great resource for learning the API.
I tried using the SuperBible in order to learn OpenGL a few years back, but it always seems to be a bit too dense for my taste. Since OpenGL itself is an API specification and usually you would learn the basics of 3D graphics before delving into it, I recommend using the fantastic Learn OpenGL site (https://learnopengl.com). It goes through the basics of OpenGL from ground-up and touches on more advanced techniques, such as shadow mapping and deferred shading. It is a fantastic site and a great resource for learning the API.