MS has all the files for download, here are a few links to get you started

Visual Studio 2015 Community Download: https://www.visualstudio.com/download…

IoT Core Templates for Visual Studio: https://visualstudiogallery.msdn.micr…

IoT Core for the Raspberry PI http://ms-iot.github.io/content/en-US…

If you have just installed windows 10 on your PC, you may have to enable “Developer Mode”, instructions can be found herehttps://msdn.microsoft.com/library/wi…

And more dev kits and samples can be found here too https://msdn.microsoft.com/en-US/wind…