EMACS is invoked by giving the command:
emacs [pathtofile]<filename>
If pathtofile isn't included then the current directory is assumed.
When EMACS begins, a text window will appear that has a mode line on the
bottom identifying what file is currently being edited. There is also
a mode listed on the lower right which depends on the extension of the
file you are editing. If you are editing a file with a standard extension
such as .c, which refers to a text file of the programming language C,
then EMACS provides enhancements such as bracket indentation to make
program structuring easier. Files with no standard extension have the
default mode 'Fundamental'.
There is a command line called a 'minibuffer' which pops up below the
mode line to prompt for input after an escape or control sequence that
requires additional information, such as a filename.
Unlike VI, EMACS is always in text-entry mode. To begin writing your document, just start typing. Editing is done with control or escape sequences.