HOWTOs and Info Sites
The following seem particularly useful in the process of KDE translations:
Version Control with Subversion (The book is part of SVN, so it might have been installed on your system as part of SVN's documentation.)
The overview of compiling KDE from SVN sources at techbase.kde.org
Various information, especially lots of useful stuff on DocBook in general and KDE documentation in particular can be found on scripts and pages by Frederik Fouvry and the The KDE DocBook Authors guide by Lauri Watts.
