# Tutorial ## Goal This quickstart guide walks through a [tutorial repo](https://github.com/kleros/vea-lightbulb-tutorial) to deploy a cross-chain application connecting a switch on Arbitrum Goerli to a lightbulb on Chiado or Goerli using the Vea devnet. The tutorial will deploy contracts which implement the same cross-chain functionality as the Vea Lightbulb [demo](https://vea-lightbulb.vercel.app/). --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.vea.ninja/build-xchain-dapps/lightbulb-demo/tutorial.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.