WSL Cheat Sheet
For a thorough description see this heise.de article
Setup
Install WSL from CLI
dism.exe /online /enable-feature /featurename:Microsoft-Windows-Subsystem-Linux /all /norestart
Enable virtualisation support for WSLv2
dism.exe /online /enable-feature /featurename:VirtualMachinePlatform /all /norestart
Enforce WSLv2 as default
wsl --set-default-version 2
Manage Distros
wsl -l [-v] # List installed distros
wsl --set-default <name> # Set default distro
wsl --set-version <name> 1 # Force distro to run in WSLv1
wsl --unregister <name> # Uninstall distro
GUI Setup
Probably easiest is to install GWSL from the MS app store.