Basic setup
To start with, we make udev rule for the touchscreen.Then remove and re-install touchscreen package. Then check if current setup went O.K. Now touchscreen should refer to eventN where N is number.
Calibration
Before calibration process I installed some handy tools that were introduced on the document.Lastly
I installed mplayer for later preview use.I downloaded video from and played it with the code below, which is exactly the same as documented.
Then I saw some scary message. I'll have to check this out later. I'm just going to add GPS module and see if it works.