Update contribution guidelines

CONTRIBUTING.md

@@ -1,16 +1,9 @@
 # Contributing to React Virtuoso
 
-Want to contribute to React Virtuoso? You will encounter a state management you are not familiar with - it's implemented using [URX](https://urx.virtuoso.dev).
-Check the examples and the conceptual docs to get the gist of it.
+## Run the project locally
 
-### How to add fixes and new features
+The repository uses NPM, [turborepo](https://turbo.build/), and [changesets](https://github.com/changesets/changesets) for its infrastructure. The `react-virtuoso` package has a [ladle](https://ladle.dev/) setup for examples, test cases, and bug reproductions. Run `npm run dev` inside `packages/react-virtuoso`. 
 
-Virtuoso has an extensive unit/e2e test suite. To run the unit tests, use `pnpm run test`. An end-to-end browser-based test suite is runnable with `pnpm run e2e`.
+## Add fixes and new features
 
-A convenient way to debug something is to preview the test cases in the browser.
-To do that, run `pnpm run dev` - it will open a simple UI that lets you browse the components in the `examples` folder.
-
-### How to add to the docs
-
-The documentation site is built with docusaurus and the content is available in the `site/docs` directory.
-The API reference is generated from the doc comments in `src/components.tsx`.
+Virtuoso has an extensive unit/E2E test suite. To run the unit tests, use `npm run test`. You can run the end-to-end browser-based test suite with `npm run e2e`, which executes a Playwright test suite against the ladle examples.