Here’s something I enjoy and use often. The following steps make it so you can easily bring up a terminal (to use for installing programs or making modifications/ inputting commands you’ll likely run across when looking for online.)

Go to:
System
Preferences
Keyboard Shortcuts

Scroll down and under Desktop you’ll see Run a Terminal.

Click it and press the keys you want to launch a terminal with. I use Ctrl-Alt-X

That’s it!

Additionally, if you want to make terminal look a little more awesome. After you’ve brought it up with your keyboard shortcut.

Click Edit> Profile Preferences

Click the Color Tab and edit the following:

Under Foreground and Background:
Make text color white
Make background color black

Next click the Background Tab:

Tick the Transparency bullet.
And put the slider at the center approximately. (Or do it as you see fit.)

That should be it! Now you’ve got a pretty slick looking terminal.