Looking for a good opengl beginners source(books, site, etc)

i’m looking for a good opengl beginners source(books, site, etc) that has plenty of exercises during the way.
i noticed that i don’t really get intrested in sources if they dont have any exercises for me to work on during my learning experience.
i program in c/c++.
whats a good source that you recommend for me?
btw im sorry if i didn’t post in the right place because i didn’t find any better place to post this thread in.

I suggest the OpenGL superbible and OpenGLinsigths