Robert,
if user has only Windows and downloaded ISO, how to create a bootable USB stick?
CorePlus is a bootable isohybrid image. This means booting from cdrom or usb pendrive is supported.
Such user has two choices to use our provided installation tools,
1. Burn cdrom from CorePlus iso, boot CorePlus, select install choices.
2. Write the CorePlus.iso directly to pendrive, boot CorePlus from pendrive, and install to another pendrive with their choices.
I see many options for Windows users that are basically equivalents to nix dd command. I will leave recommendations to community members more familiar with Windows.
I am puzzled why now? CorePlus is a replacement for MultiCore with a much improved installer. The same methods to boot MultiCore apply to CorePlus. In fact, the genesis for MultiCore was with Windows and no net access users to get started with Core.