Tutorials

Duion.com: User Manual
Duion.com: Understanding the Duion.com design philosophy
Linux: openSUSE distribution upgrade
Linux: Find openSUSE version
Linux: Count number of lines, words and characters
Uebergame - General Dedicated-Server hosting guide
Mumble - Securing your room
Mumble - Whitelist for your room
Mumble - Using Passwords for your room