https://www.foxplex.com/sites/openelec-xbmc-auf-dem-raspberry-pi/
http://raspberrypiguide.de/howtos/raspberry-pi-firmware-update/

versionen:
http://raspberrypiguide.de/

Desktop Shortcuts
http://www.raspberry-projects.com/pi/pi-operating-systems/raspbian/gui/desktop-shortcuts

Raspberry Pi: The Unofficial Tutorial
http://www.makeuseof.com/tag/great-things-small-package-your-unofficial-raspberry-pi-manual/

AN INTRODUCTION TO GPIO AND PHYSICAL COMPUTING ON THE RASPBERRY PI (General purpose input/output)
https://www.raspberrypi.org/documentation/usage/gpio-plus-and-raspi2/