Veronika, a few observations, and yes I do know what it was like getting my EE - work stopped for the day and I'm 70+ so should know better
You should read the full manual - available in the 'library'.
When you do the screen calibrations hold the stylus as you would normally - this is especially important on the e-ink/wacom screen. DON'T lose the stylus the e-ink won't work without it.
The upgrade to Ermine - see
https://www.mobileread.com/forums/sho...d.php?t=132878 about half way down the first article - will improve speed and allow more apps to run. There is one possible drawback - the camera does not work on still images, producing video works - at least on mine.
The sim card slot is just that - a slot. I think the idea was to have phone capabilities in the MK 2 version and some bright design engineer allowed for it from the start.
I assume the sliders you can't move or catch are the scroll indicators, I can't use them either so I use the trackball in stead.
To get a better view of the use of memory and other functions you need the Elixir app - not sure if it will work on 1.6 or not.
That should give you something to be getting on with and preparing more questions.