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+# Contributing to these docs
+
+We welcome anyone to contribute to the Cosine documentation. Below is a guide on how to best do so.
+
+## Local Installation
+
+You will need:
+
+- [Python3](https://www.python.org/) and Pip
+- Git
+
+Then:
+
+1. Clone this repo `git clone https://github.com/2pisoftware/cosine-docs.git`
+2. Install the python dependencies `python3 -m pip install -r requirements.txt`
+3. Preview the site locally `mkdocs serve`
+
+You should now be able to make changes to the documentation and see them rendered at `https://127.0.0.1:8000`
+
+## Writing documentation
+
+### Guidelines
+
+- Write content for the public. The scope of this site is specifically for information regarding the two Cosine repos [cmfive-core](https://github.com/2pisoftware/cmfive-core) and [cmfive-boilerplate](https://github.com/2pisoftware/cmfive-boilerplate). Do not include information for content outside these, such as other 2piSoftware repositories.
+- Write assuming knowledge of the language and problem domain. Do not include information such as *common* PHP syntax, for example control structures like for loops or if statements.
+- Cosine is Cosine. Despite the repositories being named Cmfive, please use the name Cosine when writing here unless writing specifically about one of the two repos.
+- Make content searchable. Make use of specific headings and language such that users can find content using the search bar. I.e. mention the components or problem specifically instead of as a general idea.
+- Include examples. When talking about usage, it is better to show than tell. Include code blocks using best practices, and code comments to explain as you go.
+
+
+### Markdown extensions
+
+This site currently has a number of mkdocs extensions enabled to allow for more versatile markdown syntax and rendering. Below is a list of the enabled extensions and their documentation.
+
+- [Mkdocs Material Admonitions](https://squidfunk.github.io/mkdocs-material/reference/admonitions/#usage)
+- [Python Markdown Details](https://facelessuser.github.io/pymdown-extensions/extensions/details/)
+- [Python Markdown Highlight](https://facelessuser.github.io/pymdown-extensions/extensions/highlight/#syntax-highlighting)
+- [Python Markdown InlineHilite](https://facelessuser.github.io/pymdown-extensions/extensions/inlinehilite/)
+- [Python Markdown Superfences](https://facelessuser.github.io/pymdown-extensions/extensions/superfences/)
+- [Python Markdown Tabbed](https://facelessuser.github.io/pymdown-extensions/extensions/tabbed/)
+
+## Merging to main
+
+Once you're done writing, make a commit containing your changes and push to a new branch or fork.
+Then, make a PR. It will be reviewed, changes requested if necessary, and merged into main.
+
+Do not push directly onto main.
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