voir :

http://www.pcworld.com/article/145844/26_tricks_to_help_you_tame_google_calendar.html
http://www.mavenlink.com/community/blogs/643-7-ways-to-use-google-calendar-like-a-pro
http://reseaupensant.net/post/Creer-et-partager-un-agenda-en-ligne-avec-Google-agenda2