I read this tutorial: glprogramming.com/red/
about an year ago and then I realized it's considered "depricated" (correct me if I'm wrong).

So now I have lots of free time so I want to read an up-to-date OpenGL book (that must include a GLSL guide too, correct me if I'm wrong again).
I know that there are many books out there and that some of them are out of date, so I came to ask you what's the best book for me in my condition.