docs: Add initial usage information to README

README.md

@@ -1,2 +1,24 @@
 # helios-procedures
 LaTeX source for HELIOS related procedures
+
+To get the procedures, go to the [release page on right side](https://github.com/aris-space/helios-procedures/releases) and download it from the release assets.
+
+## Usage
+
+### Doing changes
+
+Commit messages should follow [conventional commit message structure](https://www.conventionalcommits.org/)
+
+TODO: examples
+
+Changes should be small and atomic.
+Basically make many small PRs rather than one big one.
+
+⚠️ Note that the `main` branch is protected, all changes have to be made to new branches and then merged via a [pull request](https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/proposing-changes-to-your-work-with-pull-requests/creating-a-pull-request) ⚠️
+
+Whenenever there are unreleased changes on main, `tagpr` will create a new release pull request.
+Merging that PR will automatically create a new release.
+
+### Other
+
+By default, documents will have a draft watermark controlled by a single LaTeX variable unless they are compiled by the release pipeline.