big list - Showcase of beautiful typography done in TeX & friends - TeX - LaTeX Stack Exchange
Guide for Authors 5
Template for Technical Manual / User's Guide using Memoir - TeX - LaTeX Stack Exchange
100 + User Manual Templates | ProProfs
Albert Cardona on Twitter: "Here is an example LaTeX template for a manuscript with embedded figures, by @uni_matrix : https://t.co/emwpPEgecE https://t.co/IX4JAtZhEz" / Twitter
TeXstudio : user manual
Using Google Docs for User Guides and Documentation in Build Scripts | ASchroder.com
GitHub - payvision-development/latex-template: Documentation template in LaTeX
40 Free Instruction Manual Templates [Operation / User Manual]