If you're already signed up for QCS, you'll have access to a personal, cloud-based JupyterLab IDE via JupyterHub. Your JupyterLab IDE is a provisioned development environment that comes with everything needed to use QCS pre-installed, including the Forest 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.
You can access your JupyterLab IDE by signing into QCS and clicking the JupyterLab heading in the upper right.
Once signed in, you'll see the JupyterHub control panel, where you can start (or stop) your JupyterLab IDE server.
Start Your Server
After clicking Start My Server from the control panel, you can choose a pre-configured server option. 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.