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So far, I've tried opening Visual Studio, which scared the hell out of me. There's absolutely nothing there I recognize, or know how to use!
Yeah, it can look daunting when you first try - it's not designed for "unattended beginners" to double click and go.
The first thing you need is a Solution, which contains one or more Projects. Each project produces an Assembly which can be executable or not. Your project will want at least one executable project.
Now for the fun bit ... what type of executable project do you want to create? There are three "basic types" of EXE file you can produce with C#: Console, WinForms, and WPF - and those are in increasing degree of complication. (But ... there are also UWP, Website, and Xamarin projects but ignore those for now).
If you want to present information in a digestible way then I'd suggest a WinForms app as your best starter - if you know C#, then that's the simplest way to a Windows app with a GUI. But ... if all you know is C# the language, then there is a massive learning curve heading your way even for WinForms as there are a huge number of classes (including displayable Controls) which you need to be aware and understand.
What I'd suggest is grabbing a book - Addison Wesley, Wrox, and MS Press all do good ones - and working your way through it. That'll get you started with Solutions and Projects, and introduce the Controls and DataSources you will need, as well as explaining how to use them - it's far too big a subject for a little text box like this!
Good luck - there is a lot to learn, but it's all pretty consistent so if you have a development background it should be relatively easy to pick up.