WSL can be installed easily: wsl --install.

Note that drives are mounted, but access to files outside WSL can be slow, always copy files to WSL directly.

mount -l  # what drives are mounted

Reclaim disk space

WSL also doesn’t automatically release space back to Local Hard drive. To release the disk space occupied by WSL follow this:

### Optimize (shrink) WSL 2 .vhdx
## Must be run in PowerShell as Administrator user
# DistroFolder found at: $env:LOCALAPPDATA\Packages\
# Examples:
#   CanonicalGroupLimited.UbuntuonWindows_79rhkp1fndgsc
#   CanonicalGroupLimited.Ubuntu20.04onWindows_79rhkp1fndgsc

wsl --shutdown
optimize-vhd -Path .\ext4.vhdx -Mode full
#Run `wsl` or your favorite terminal to resume use

optimize-vhd requires Hyperviser:

Enable-WindowsOptionalFeature -FeatureName Microsoft-Hyper-V-All -Online

Limit CPU memory usage

WSL can take a lot of CPU memory, to prevent this follow this, create /user/.wslconfig

memory=6GB   # set this line what you want to limit memory
swapFile=E:\\swap.vhdx   # in case you need more memory specify swapping location with the hard drive, use double backslash 

vmmem is the wsl2 process for CPU memory that you can observe in Task Manager.