I know that there is a calendar in Emacs and I want to use it. After a lot of Google searches, and also after reading Emacs' manual, I still have no idea how to use it. The only thing I have succeeded is to view a buffer with 3 months.
What I want to do is use it like the Google Calendar so to be able to write entries in the days I want and some notes.
I have seen that there are also some other options available like the diary but the only thing I have find for it is a description so I don't actually know what it is! How can someone use Emacs as a Calendar and what are the options to do so (Calendar, Diary etc)?