@kenibure said in I cannot use this system correctly.:
Problem number 1:
When I try to reboot the Raspberry, the graphic interface disappear, and then appears a command console. I would have to make "sudo reboot" or "sudo poweroff", but then, the system doesn´t detect my keyboard.
I can confirm this is a common problem - especially when the program encounters a fault and exits to terminal. To properly shut down the computer I have to SSH into it and "reboot" since you can't use the keyboard hooked up to the Pi anymore at that point.
...can't help you with how to fix it I'm sorry to day.