Inform 7 Cheat Sheet, version 0.2, by Mark-Oliver Reiser.
Editable source files (in Microsoft Office formats) for the Inform 7 Cheat Sheet, version 0.2, by Mark-Oliver Reiser.
The Inform Handbook, version 3, by Jim Aikin. This is current for Inform 10.1.2.
Inform Recipe Book manual, converted to PDF format.
The Well-Versed Informer by Jeff Nyman. Version 0.1 (Introduction), 0.3 (Inform Foundations, Descriptions and Locale). Describes Inform 7 7.1/5Z71.
Writing With Inform manual, converted to PDF format.