One thing that still kind of makes me uneasy about living abroad is signing things. Honestly, anything of a legal nature makes me nervous but especially when I'm abroad. Nine times out of ten, there's no English version of the paperwork you're signing because for it to the legally binding here, it has to be in Czech.
It's one of those situations where you have to hope like hell that the person behind the counter isn't going to screw you over, is just doing their job, treating you like any Czech person that walks through the door and hasn't left out any important information when telling you, "Sign these documents" and giving you a basic rundown of what they say.