All other documentation is online, and you can get to it here:
https://drew-naylor.com/guinget/

If that link doesn't work or you can't find what you need, you can go to docs folder here:
https://github.com/DrewNaylor/guinget/tree/master/docs

If the docs link doesn't work or was unhelpful, you can go to the readme here:
https://github.com/DrewNaylor/guinget/blob/master/README.md