Emacs switching out of terminal

In terminal mode you have to use C-c o to switch to the other buffer. C-c is the "terminal escape character"

http://www.gnu.org/s/libtool/manual/emacs/Terminal-emulator.html

With the assumption that you are using a Linux distro:

1. Ctrl + d to terminate the Terminal Emulator process
2. C-c k then ENTER to kill the associated buffer