# Getting Started

This guide will take you through starting a graph based on provided data.

## Prerequisites

This tutorial requires you to be connected to **local Cayley installation**. For more information on installing Cayley locally, see [Install Cayley](/cayley/installation.md).

## Start Cayley

```bash
cayley http
```

You should see:

```
Cayley version: 0.7.7 (dev snapshot)
using backend "memstore"
listening on 127.0.0.1:64210, web interface at http://127.0.0.1:64210
```

You can now open the web-interface on: [localhost:64210](http://localhost:64210/).

Cayley is configured by default to run in memory (That's what `backend memstore` means). To change the configuration see the documentation for [Configuration File](/cayley/configuration.md) or run `cayley http --help`.

For more information about the UI see: [UI Overview](/cayley/usage/ui-overview.md)

## Run with sample data

### Download sample data

[Sample Data](https://github.com/cayleygraph/cayley/raw/master/data/30kmoviedata.nq.gz)

### Run Cayley

```bash
cayley http --load 30kmoviedata.nq.gz
```

## Query Data

Using the 30kmoviedata.nq dataset from above, let's walk through some simple queries:

### Query all vertices in the graph

To select all vertices in the graph call, limit to 5 first results. `g` and `V` are synonyms for `graph` and `Vertex` respectively, as they are quite common.

```javascript
g.V().getLimit(5);
```

### Match a property of a vertex

Find vertex with property "Humphrey Bogart"

```javascript
g.V()
  .has("<name>", "Humphrey Bogart")
  .all();
```

You may start to notice a pattern here: with Gizmo, the query lines tend to:

Start somewhere in the graph | Follow a path | Run the query with "all" or "getLimit"

### Match a complex path

Get the list of actors in the film

```javascript
g.V()
  .has("<name>", "Casablanca")
  .out("</film/film/starring>")
  .out("</film/performance/actor>")
  .out("<name>")
  .all();
```

### Match

This is starting to get long. Let's use a Morphism, a pre-defined path stored in a variable, as our linkage

```javascript
var filmToActor = g
  .Morphism()
  .out("</film/film/starring>")
  .out("</film/performance/actor>");

g.V()
  .has("<name>", "Casablanca")
  .follow(filmToActor)
  .out("<name>")
  .all();
```

To learn more about querying see [Gizmo Documentation](/cayley/query-languages/gizmoapi.md)


---

# 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://cayley.gitbook.io/cayley/getting-started.md?ask=<question>
```

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.