GNU/Linux Fedora Installing kernel-devel Offline Guide
You Are Welcome! The Tutorial Shows You Step-by-Step How-to Install kernel-devel without Internet Connection in Fedora GNU/Linux.
And kernel-devel for Fedora is to provide the complete Source Code for the Linux Kernel.
Most noteworthy: to achieve this Setup you simply need any Online Computer with a Browser and a USB Stick to Copy the downloaded Package.