How to export your contacts from:
If you use Outlook, Gmail, Yahoo Mail or any other external service to read and write your emails and want to import the contacts into the application to create your groups, here are a few links that may be useful.
Gmail
http://support.google.com/mail/answer/24911?hl=en
Yahoo mail
http://help.yahoo.com/kb/index?locale=en_CA&y=PROD_ACCT&page=content&id=SLN3626
Outlook
2007
2010
http://office.microsoft.com/en-ca/outlook-help/export-contacts-HA101870639.aspx
2011
http://office.microsoft.com/en-ca/mac-outlook-help/export-or-manually-archive-outlook-items-HA102928297.aspx
(choose « Export contacts in a tab-delimited text file »)
2013
http://office.microsoft.com/en-ca/outlook-help/export-contacts-HA102919759.aspx
Apple Mail
http://email.about.com/od/macosxmailtips/qt/How-To-Export-Your-Mac-Os-X-Mail-Address-Book-Contacts-To-A-Csv-File.htm
(you will need to install an app to convert your contacts from vCard to CSV)