Ubuntu prawns help ...... ^ !!!!!!

Ubuntu prawns help ...... ^ !!!!!! -- Linux general technology-Linux technology and application information. For details, refer to the following section. I use an Internet book. I cannot find the remaining space to create a disk when I install it in a partition using hardware, and in the last run that terminal sodu amunnt-1/isodevice running result is command not found how can not install, I was exposed to linux yesterday, would like to know linux, I don't want to be blocked outside linux like this. Let's help you ...... Thank you!