Update firstinterhacktions.md

en/firstinterhacktions.md

@@ -14,18 +14,19 @@ You need:
 
 ### Getting to the interactive python command line
 Switch on your card10.
-If your card10 display shows the text _USB activated._ your card10 is in the _USB storage_ mode, which is the wrong mode for the interactive pythong command line. A brief press on the _power_ button will exit the _USB storage_ mode.
+
+If your card10 display shows the text _USB activated._ your card10 is in the _USB storage_ mode, which is the wrong mode for the interactive python command line. If the device is mounted you need to eject it first. A brief press on the _power_ button will exit the _USB storage_ mode.
 <!-- a picture here, indicating the right button would be nice -->
 
 To get to the interactive command line, connect your card10 to your laptop. Typically, it will be called `/dev/ttyACM0` or `/dev/ttyACM1`.
 You can find out what it is called on your machine by comparing the output of `ls /dev/tty*` before and after you connect your card10 to the laptop.
 
-Depending on which tool you chose, you can open the interactive python command line
+Depending on which tool you chose, you can open the interactive python command line. You might need to add "sudo" in front of the commands.
 - using screen: `screen /dev/ttyACM0 115200`
 - using picocom: `picocom -b 115200 /dev/ttyACM0`
-You might need to add "sudo" in front of the commands.
 
-If you don't see a line starting with _>>>_, try pressing _Ctrl+C_.
+
+If you don't see a line starting with _>>>_, try pressing _Ctrl+C_ (maybe more than once).
 
 <div class="p-notification--information">
   <p class="p-notification__response">
@@ -44,12 +45,13 @@ There are some neat python functions prepared for making the leds blink. Let's i
 Next, we light up one of the r0kets by typing:
 ```leds.set_rocket(0, 100)```
 
-The first number entered is the index for selecting the r0ket LED. You can choose between 0 and 2.
+The first number entered is the index for selecting the r0ket LED. You can choose between 0 (blue, left) , 1 (yellow, middle) and 2 (green, right).
 
 
 ## Using card10 in USB storage mode
 
-
+### Closing a session
+To close a session in screen, press ```Crtl+A``` then `k` then `y`
 
 ## Congratulations!
 When applying your newly learned card10 skills, please have a look at the [general considerations for designing Interhacktions](/en/interhacktions). Also bear in mind that some blinking patterns have been assigned a special meaning for communicating a traveler's [personal state](/ps).