Another fascinating project addresses the problem of trying to break 3 Enigma messages from WW2. Believe it or not several coded messages from U-Boats remain unbroken to this day! https://www.networkworld.com/article/2247101/still-trying-to-crack-nazi-enigma-messages.html
On the other hand, say that you share some information with others (perhaps by way of a post on Facebook for example), and the recipient then shares that with others who similarly republish it; you can see how several versions of that information can exist around the world thanks to the internet. Furthermore you may delete your initial post (having had second thoughts about it) but you can’t delete the many instances of its repetition around the internet. Thus the maxim that one must remember “What goes on the internet stays on the internet.”
This may help you to understand that the internet is not one big computer “in the sky” but exists as a massive collection of computers all connected by electronic communication. It is true that a great deal of the information is stored on massive computers. Amazon for example hold their information on lots of huge super computers (called ‘servers’) all interconnected. While we are about it, the expression I used about computers “in the sky” is maybe the origin of the other term for the internet that you often hear – ‘the Cloud’.
However, before you can access information on the internet there are some essential pre-requisites. First you must either own or have access to a computer. Of course the word computer can cover many different forms of device. I will look a little more at this another time. Second you require a means to connect your computer to the internet which means you have to have a contract with a telecommunications company who becomes your Internet Service Provider (ISP). Once you have connected you need a means of displaying information on your screen. This is called a Browser. Look out for more on this on another post.