...
vim is a full-featured editor with many customizations. There is a guide to getting started at:
There are several tutorials and references on vim on the web such as:
Also, there is a tutorial inside of vim.
...
emacs is a full-featured editor comparable with vim, but without insert and editor/command modes. Instead, commands are identified by special characters (combinations of the Control and/or Meta keys with regular characters), and regular text is treated as text being added to the document. It also has additional features designed for editing source code and can be customized and used as an IDE for coding with integrated compiling and debugging. There are several tutorials online as well. The University of Chicago has done a great job on explaining what emacs is and how to use it:
That web site would be a great start to utilizing emacs.
...