How can I add a Window to my Visual Studio?
I created an Add-in project and now I have this in my solution explorer:
Do I just add right click the solution and add a Windows form? I'm not sure how this works and the tutorials I find don't touch on this.
You can right click the project file under the solution file and select add new item. Btw it looks like you have a missing reference for "Microsoft.CSharp though; that will need to be resolved or removed from your project.
Here is how you instantiate a form and show it in the most basic sense.
Form f = new Form(); f.Show();
Hope this helps.