This is a great intro. Here's my favorite OS X Terminal trick:
⌘. (command period) is a hotkey not defined in the menu for sending BREAK. This is automatically equivalent to ctrl+c in shells, ctrl+g in emacs and ESC in Vim. Similarly, ⌘K is short for clearing the screen. These are much more ergonomic than the standards on Mac laptops and wireless keyboards.
$ clear is six characters, and you have to be on a new prompt first. ⌘R is a reset command, meaning it's for restoring a garbled terminal. ⌘K will keep your input on the line but clear other output, same as ⌃L but more pinky-friendly.
⌘. (command period) is a hotkey not defined in the menu for sending BREAK. This is automatically equivalent to ctrl+c in shells, ctrl+g in emacs and ESC in Vim. Similarly, ⌘K is short for clearing the screen. These are much more ergonomic than the standards on Mac laptops and wireless keyboards.