# First Time Setup

Follow this step-by-step guide to set up the Sinch Voice and Video SDK for the first time.

## Register an Application

> 1. Register a Sinch Developer account [here](https://dashboard.sinch.com/signup).
2. Setup a new Application using the Dashboard where you can then obtain an *Application Key* and an *Application Secret*.



## Download

The Sinch SDK can be downloaded [here](/docs/in-app-calling/sdk-downloads). It contains: the sinch.min.js, this user guide, reference documentation, and sample apps for calling.

## Add the Sinch library

There are many ways to include Sinch in your project, enabling you to select a suitable method depending on how your project is set up.

### Hosted with your webapp

You can host the library co-located with your website and include Sinch using


```html
<script src="sinch.min.js"></script>
```

### Load from Sinch CDN by version

If you prefer to load a particular version from our CDN, use


```html
<script src="//cdn.sinch.com/<version>/sinch-rtc-min.js"></script>
```

### Load from Sinch CDN

If you prefer to always load the latest version from our CDN, use


```html
<script src="//cdn.sinch.com/latest/sinch-rtc-min.js"></script>
```

## Reference Applications

View our JavaScript reference applications [here](/docs/in-app-calling/js/reference-applications)

## Integrate the type definitions file (optional)

You can access the type definitions for the SDK.


```js
import { Sinch } from "../types/common/sinch-rtc";
```

Move the sinch-rtc.d.ts included in the SDK download to your definitions directory and import

![Types imported into your IDE](/assets/jssdk-types.90a22e37fc241035556b99b9dfa370f60a001403b8a302913816ddda85652dd7.3032db13.png)