Suggestions on ways to make an editable copy of a Twine story in Google Docs. None of these are as easy as they should be, but at least there are some workarounds.
A Total Beginner’s Guide to Twine 2.1 – Adam Hammond
This guide is to Twine uses the Sugarcube format, which allows more control via CSS and Javascript, rather than Harlowe, which allows easier internal customization but isn't as easy to implement with CSS and Javascript.
A tutorial on the basics of Twine. This uses CSS rather than enchant macros for formatting (which is probably a better strategy in the long run, especially for larger games, but a little harder for people to learn initially if they don't already know CSS). The course is built in Rise with an overview of the features.