In the "What is copyright?" section, there is a brief explanation of
- what is copyrightable, and
- what are the rights for each copyright owner.
You'll note that there's actually a long list of rights. The word "copyright" is misleading because it implies one right. In fact you own many rights - not just to copy or sell, but also to make derivatives, such as translations. This is how novelists can sell their movie rights; they are selling the right to a derivative work (the movie) independent of the sale of their novel (the original work).
Traditionally, academic journals and book publishers ask authors to sign away all their rights when they publish. This is called a copyright transfer or an exclusive license. Recently there has been push back against this practice, since digital rights now mean that books are never "out of print" and therefore rights never revert back to the author. Tools that authors can use include:
