Without further ado, we suggest you start with the Introduction!
This book is, clearly, a work in progress! Contributions of any kind are most welcome — please see the discussion in GitHub issue #62 for some ideas of things that should be documented here.
The documentation is written in Markdown (specifically, CommonMark using
pulldown-cmark) and rendered into HTML using mdbook. The source code lives
docs/ subdirectory of the main tectonic repository. To make and view
changes, all you need to do is install mdbook, then run the command:
$ mdbook serve
Members of the Tectonic community are eager to help if you run into any issues — please launch a thread on the Tectonic forum if you’d like to get involved!