# JupyterLab IDE

If you're already signed up for QCS, you'll have access to a personal, cloud-based JupyterLab IDE via [JupyterHub](https://jupyterhub.qcs.rigetti.com). Your JupyterLab IDE is a provisioned development environment that comes with everything needed to use QCS pre-installed, including the [Quil SDK](/qcs/master.md#quil-sdk) and example notebooks. Any work saved in your IDE will be persisted so that you can continue working the next time you sign in.

### Access JupyterLab

You can access your JupyterLab IDE by [signing into QCS](https://qcs.rigetti.com) and clicking the JupyterLab selector in the upper right. You may then select the appropriate JupyterLab region by clicking on it.

![](/files/lCXnRXjM0OC6cSanrpO0)

![](/files/tQuvg56MnDjQPCTGP1Ku)

Once you have selected the appropriate JupyterLab, you'll see the JupyterHub control panel, where you can start (or stop) your JupyterLab IDE server.

![](/files/TX3EDvmVSaSI8ftlayWr)

### Start Your Server

After clicking `Start My Server` from the control panel, you can choose a pre-configured server option. Most users will want to use the "Recommended" configuration. Once selected, click `Start`. 

Once your server is started, you'll be dropped into a JupyterLab IDE, where you can begin developing your own quantum programs or exploring the example notebooks in the `tutorials` directory.

![](/files/-MfnCAUrE5mIL5MLh6ig)

{% hint style="success" %}
If you're not familiar with using JupyterLab, we recommend [this handy guide](https://jupyterlab.readthedocs.io/en/stable/user/interface.html).
{% endhint %}

### Stop Or Change Your Server

If you'd like to stop your server or restart it with a different server option, follow the steps below:

1. From your IDE, navigate to `File -> Hub Control Panel`.
2. From the control panel, click `Stop My Server`.
3. When the server finishes stopping, click `Start My Server` to [select and start a server option](/qcs/getting-started/set-up-your-environment/jupyterlab-ide.md#start-your-server).


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