We've also added a handful of new tips to the English site, culled from suggestions you submitted. Some of the new tricks to help manage your email efficiently include sending and receiving mail from multiple addresses, adding formatting to chat messages, and selecting multiple messages at once using shift-select. Thanks to everyone who submitted ideas, and please keep them coming.
Update (1/12): The Gmail tips guide is also now available in German, Italian, Polish, Dutch, Simplified Chinese and Traditional Chinese.
Original Source : http://gmailblog.blogspot.com/2009/09/more-ninja-tips-in-more-languages.html