Excelente recopilado de diversos video-tutoriales de Ruby.
(https://yt3.ggpht.com/-fbZqqFDXJjY/AAAAAAAAAAI/AAAAAAAAAAA/LlcC0KKJHcI/s100-c-k-no/photo.jpg)
Link: https://www.youtube.com/channel/UCeDsB1uzaHry-N6m9jqq1uw/videos (https://www.youtube.com/channel/UCeDsB1uzaHry-N6m9jqq1uw/videos)