The Terminal is one of the post important tools of a programer and allows a quick completion of various tasks.

Even tough the command line is from a time before Graphical User Interfaces, it has still kept its value.
Today many developments tools are only available as command line applications.
In that sense it its crucial for developers too learn how to use it.

Links

• The Course on codecademy is perfect for beginners.
• A Cheatsheet with the most important commands can be found here.
• A video with extensive explanations is available here.
• UI Fetishists can download a nice color profile here.
• Professionals might want to install an alternative Shell like fish or zsh.