When public documentation for the Hyper-V APIs sucks the way that it does, I'd be willing to risk not being able to write a operating system later if I could figure out a side project now ;)
I'm thinking of the HCS docs (https://docs.microsoft.com/en-us/virtualization/api/hcs/over...). There's very poor documentation of the different types of VMs/Containers you can launch and how to launch them, I'm not sure how much of this is intentional or due to the newer container APIs being too new, but it's super frustrating when you're trying to understand how WSL2 or Windows Sandbox work (or honestly, how to use Windows containers without Docker).