Consoles are devices used to play videogames e.g. Nintendo 64, Sega Genesis, Sony Playstation, Microsoft Xbox, etc. To make EO less complicated, the term Console will also apply to any machine that can run a video game e.g. Arcades, DOS, X68000, etc. Please see the tutorials below for more information regarding consoles.
See also:
How to add a console to a console group
How to add a console that is not contained within a console group
How to add MAME for arcade games
How to modify console properties
How to export a console to share with others