Text editors, network tools, etc. It is about as basic as you can get. Your mouse isn't going to work and everything is done through keyboard commands. Luckily, most of the commands are displayed down at the bottom of the console screen. This is the process for naming your file.
G is listed as help at the bottom of the page.
You will need it. Let's try some other project. Although Mac OS X comes with the tcsh shell, linux uses the bash shell and no doubt, you're going to hear about it. There should be lots of books and tutorials on linux, so lets change our shell to bash, so they'll make more sense on the Mac OS X Terminal. It should download to your Desktop.