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I wanna learn to programme with opengl (actually I wanna learn in the future about graphics, gpu, and hpc), a friend suggested me to read the GoF’s book (design patterns) and after that, read something about Ogre3d or Qt or Sdl for example… I questioned about it, because I read a book in short time ago, and I want to improve my knowledge… is design patterns a requirement and then learn opengl?
Design patterns have nothing to do with graphics programming. They are broadly applicable ways you can solve multiple problems that commonly arise in programming. I ‘ll have to refer you to this very good question here for more: How do you know when to use design patterns?.
My personal opinion is that you should not dive into design patterns before accumulating some experience with programming in general first. To get design patters you need to have a first-hand experience of the problems they will help you solve (someone who has never needed a fire will find it hard to understand the usefulness of matches).
Start with a few introductory texts, then get some hands on experience (in graphics, since that is your area of choice), and then read the GoF book.