August 12th, 2011 Update: Please note that the tutorial below was posted on November 20th, 2010 and it is now a bit outdated but can still be used for your reference if you’re new to Transifex.
You have three different methods in which you can do the translation. Either use the in-browser translator, or a command-line interface tool
to translate the strings (for advanced users who use Command Prompt in Windows or Terminal in Linux), or use localization software. As for localization software, I personally recommend POedit
as it is available for Windows, Mac OS X and Linux. However, there are many other localization programs which you may otherwise prefer to use. Please do not hesitate to ask me questions regarding this topic as I will try my best to help.
For more help, go to http://help.transifex.net/
Click the images below for a larger view.