This document is a list of links to various YouTube videos and playlists. However, without accessing the actual video content it is not possible to determine the high level essence or summarize the information contained in the videos from the links alone in 3 sentences or less.

1. http://www.youtube.com/watch?v=fUNY4vlkkmg<br />http://www.youtube.com/watch?v=lexatrv3TcE<br />http://www.youtube.com/watch?v=SCu0Bsfhm7o<br />http://www.youtube.com/view_play_list?p=2291C79493B44FCD<br />http://www.youtube.com/watch?v=lexatrv3TcE<br />http://www.youtube.com/watch?v=rZuIKlLKpU0<br />http://www.youtube.com/watch?v=Qv7Aq70L8Z4<br />http://www.youtube.com/watch?v=DPDNsJGJONg<br />http://www.youtube.com/watch?v=IS2bTXlBe_I<br />http://www.youtube.com/watch?v=NSTZU2QVixM<br />http://www.youtube.com/watch?v=mnDA1LIOlZY<br />http://es.justin.tv/julianorozcovirtual/b/276616322<br />http://www.youtube.com/watch?v=laBnGWdusbE<br />