Hello,

Short remarks concerning this instructions: https://www.arduino.cc/en/guide/linux

• Add additional command to Please Read... instructions
  To make Arduino work under Linux in some cases you have to use these 2 commands:

sudo usermod -a -G dialout <username>
sudo chmod a+rw /dev/ttyACM0

In the mentioned instructions, second line is missing. I believe it's worth adding.
Reference: https://arduino-er.blogspot.com.tr/2014/08/arduino-ide-error-avrdude-seropen-cant.html

• Change title
  from: Install the Arduino Software (IDE) on on Linux
  to: Install the Arduino Software (IDE) on Linux