How does the code flow when doing a HTTP GET & POST

See more:

C#

.NET

HTTP

WebResponse

request

So I've been really curious the past few days..
So when doing a HTTP GET & POST how does the code flow.

I kiiiinda get how it works but I would like to dig down and see how it works.
And so far I havent found any good blog posts or anything about it.

So I guess this is the first part.
This is how I think it flows.

1. Do a GET request and turn the AutoRedirect to false.
2. Wait for it to load and store the cookies you got.
3. Use those cookies to build up the POST request.
4. POST the encoded post DATA.
5. Check the request result.

There is probably alot of things I missed and that's why I need you guys.
What did I miss and what are some things to keep in mind when doing a let's say a Login HTTP GET & POST.

And in the first step

1. Do a GET request and turn the AutoRedirect to false.

What does it look like visually, like would it just look the same as when you type on https://Google.com in your webbrowser and then when the result is displayed is that the same?
Anyways, if you could please describe how this works because I find this topic very interesting.

What I have tried:

I've tried looking around for blog posts but couldn't find anything specific.