Atom is an extremely new code editor created by [GitHub](https://github.com/). It's free, open-source, easy to install and easy to use. It's available for Windows, OSX and Linux.

We'll see all this in action later. Soon, you'll come to think of your trusty old code editor as one of your favourite tools :)

a screen, mouse or a keyboard, because their main purpose is to store data and serve it. That's why they're called *servers* -- because they *serve* you data.

OK, but you want to know how the Internet looks like, right?

Looks like a mess, right? In fact it is a network of connected machines (the above mentioned *servers*). Hundreds of thousands of machines! Many, many kilometers of cables around the world! You can visit a Submarine Cable Map website (http://submarinecablemap.com) to see how complicated the net is. Here is a screenshot from the website:

It is fascinating, isn't it? But obviously, it is not possible to have a wire between every machine connected to the Internet. So, to reach a machine (for example the one where https://djangogirls.org is saved) we need to pass a request through many, many different machines.

Instead of addresses with a street name, city, zip code and country name, we use IP addresses. Your computer first asks the DNS (Domain Name System) to translate djangogirls.org into an IP address. It works a little bit like old-fashioned phonebooks where you could look up the name of the person you want to contact and find their phone number and address.

When you send a letter, it needs to have certain features to be delivered correctly: an address, stamp etc. You also use a language that the receiver understands, right? The same applies to the *data packets* you send to see a website. We use a protocol called HTTP (Hypertext Transfer Protocol).

Since this is a Django tutorial, you will ask what Django does. When you send a response, you don't always want to send the same thing to everybody. It is so much better if your letters are personalized, especially for the person that has just written to you, right? Django helps you with creating these personalized, interesting letters :).

Enough talk, time to create!

Huh, it's exciting, right?! You'll write your first line of code in just a few minutes :)

The window, which is usually called the __command line__ or __command-line interface__, is a text-based application for viewing, handling, and manipulating files on your computer. Much like Windows Explorer or Finder on Mac, but without the graphical interface. Other names for the command line are: *cmd*, *CLI*, *prompt*, *console* or *terminal*.

It's probably under Applications → Accessories → Terminal, but that may depend on your system. If it's not there, just Google it :)

Each command will be prepended by this sign and one space, but you don't have to type it. Your computer will do it for you :)

As you can see, the computer has just printed your username. Neat, huh?:)

This little command will create a folder with the name `practice` on your desktop. You can check if it's there just by looking on your Desktop or by running a `ls` or `dir` command! Try it :)

Small challenge for you: in your newly created `practice` directory create a directory called `test`. Use `cd` and `mkdir` commands.

Using `..` with the `cd` command will change your current directory to the parent directory (this is the directory that contains your current directory).

That's it for now! You can safely close the command line now. Let's do it the hacker way, alright?:)

Cool, huh?:)

Python originated in the late 1980s and its main goal is to be readable by human beings (not only machines!). This is why it looks much simpler than other programming languages. This makes it easy to learn, but don't worry, Python is also really powerful!