WSL stands for Windows SubSystem for Linux. If you use Windows 10 OS, you have an option to download and install Ubuntu on it. And you can install BitShares-Core to it.
- Install WSL
- Follow this instruction: https://docs.microsoft.com/en-us/windows/wsl/install-win10
- Download Ubuntu app from Microsoft Store for Windows 10 and install it
- Launch Ubuntu and follow default bitshares-core instructions for build on Ubuntu.