Here you will find all available manuals.
The easiest way to synchronise your files is by using the Sync Client which works for all operating systems.
How to manage todo.txt with ownCloud (Englisch / Blogpost)
Sync Thunderbird contacts to PortKnox ownCloud
Mount Dropbox into your PortKnox ownCloud
IPhone / IPad
Sync PortKnox ownCloud contacts with your Apple IPhone or IPad
AndroidUse the Android App FolderSync with ownCloud
Sync your contacts, calendar & tasks with your Android device (DAVDroid method)
Mac OS X
Sync PortKnox ownCloud contacts with Mac OS Address Book
Mount PortKnox ownCloud into the Mac OS Finder (Webdav)
Connect Mozilla Sync with your PortKnox ownCloud
Best score:Nextcloud Security ScanSSL Server Test