For reading documentation, Emacs runs the info program. To start info, type C-h i in the Emacs window. An info window will open to display a list of major topics with instructions in the upper part of the window. Click on a topic with the middle button on the mouse or move the cursor to it and type (RET) to open the selected topic. Again click on the key word of interest, the information will be shown in the window. Type d to return to the topics window. Type q to exit info session.
Read News OtherFun Read man