# Writing a PostCSS Plugin

## Getting Started

* [“Create Your Own Plugin” tutorial](http://webdesign.tutsplus.com/tutorials/postcss-deep-dive-create-your-own-plugin--cms-24605)
* [Plugin Boilerplate](https://github.com/postcss/postcss-plugin-boilerplate)
* [Plugin Guidelines](https://github.com/postcss/postcss/blob/master/docs/guidelines/plugin.md)
* [AST explorer with playground](http://astexplorer.net/#/np0DfVT78g/1)

## Documentation and Support

* [PostCSS API](https://github.com/postcss/postcss/blob/master/docs/api.md)
* [Ask questions](https://gitter.im/postcss/postcss)
* [PostCSS twitter](https://twitter.com/postcss) with latest updates.

## Tools

* [Selector parser](https://github.com/postcss/postcss-selector-parser)
* [Value parser](https://github.com/TrySound/postcss-value-parser)
* [Property resolver](https://github.com/jedmao/postcss-resolve-prop)
* [Function resolver](https://github.com/andyjansson/postcss-functions)
* [Font parser](https://github.com/jedmao/parse-css-font)
* [Dimension parser](https://github.com/jedmao/parse-css-dimension)
  for `number`, `length` and `percentage`.
* [Sides parser](https://github.com/jedmao/parse-css-sides)
  for `margin`, `padding` and `border` properties.
* [Font helpers](https://github.com/jedmao/postcss-font-helpers)
* [Margin helpers](https://github.com/jedmao/postcss-margin-helpers)