A number of websites exist where cursor themes can be downloaded. If a cursor theme is not available in the official repositories or the AUR, it can be added manually. Official repositories - 'xcursor-' search.
Installation can be done with a package, or downloaded and extracted to an appropriate directory. The display server includes a cursor theme, however, other cursor themes can be installed and selected. The display server is accompanied by a cursor theme that helps various aspects of GUI navigation and manipulation.