How the internet work

After learning more about the internet I've learned that the internet is a very complex system and has many different parts too it. There are any other parts of the system that check everything within the internet. there are some parts that keep all you information secure when you use a certain type of website. Also how each electronic device such as phones, laptops, and desktops have their very own specific IP Address which allows you too know where you're sending a message too.
Even each website has their very own IP address which lets you know where too go in order to get the website you want to get to.  and this is all connected too a DNS server.