A quick video on installing a Ruby runtime in Linux, Mac OS X (nothing to do), and Windows. LINKS:
RVM (ruby version manager): http://rvm.io/
Windows Installer: http://rubyinstaller.org/
On this page of the site you can watch the video online Programming Ruby 02 -- Installing Ruby with a duration of hours minute second in good quality, which was uploaded by the user tutoriaLinux 12 October 2014, share the link with friends and acquaintances, this video has already been watched 11,077 times on youtube and it was liked by 109 viewers. Enjoy your viewing!