So I've read through all of the tutorials on the site and I was just curious on how people make windowed programs. I don't think I'm quite ready for that but I just want to know how it's done so I would be able to do it in the future once I'm a bit more advanced with C++.
This is where you start. There really is no other place to start. This fifth edition was written 1999, but most of the techniques are all still up to date. The book is over a 1,000 pages and will walk you through every aspect of creating basic to intermediate Windows applications.