Download Twine 2.2.1 for macOS, and make sure to move the downloaded zip file (twine_2.2.1_osx.zip) into your Thawspace folder.
Adam Hammond’s A Total Beginner’s Guide to Twine 2.1
The Harlowe 2.1.0 manual is an additional source of information. A lot of the functionality of Twine is contained in what are called story formats, like Harlowe, Snowman and SugarCube. Harlowe is the default story format for Twine 2.
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