This is the streamlined process for taking a new laptop with Windows 10 installed on it, wiping it, installing Linux, and recreating your Windows 10 installation within VirtualBox on that laptop. This is not for newbies, but for intermediate Linux users who know their way around their distro and have several Linux installations under their belt. It’s more a checklist than a blow-by-blow. The internet is your friend.
(I’ll assume you’ve already checked that you can install Linux on your hardware.)