add info on notebook extensions

docs/install/digitalocean.rst

@@ -118,16 +118,38 @@ Step 3: Install conda / pip packages for all users
 
 .. include:: add_packages.txt
 
+.. _digitalocean/resize:
+
 Step 4: Resizing and editing the droplet
 ========================================
 
-#. As you are using your JupyterHub, you may find that you need more memory, 
-   disk space, or CPUs. Digital Ocean servers can be resized in the 
-   "Resize Droplet" panel.
+As you use your JupyterHub, you may find that you need more memory, 
+disk space, or CPUs. Digital Ocean servers can be resized in the 
+"Resize Droplet" panel. These instructions take you through the process.
+
+#. First, click on the name of your newly-created
+   Droplet to enter its configuration page.
+
+#. Next, **turn off your Droplet**. This allows DigitalOcean to make
+   modifications to your VM. This will shut down your JupyterHub (temporarily).
+
+   .. image:: ../images/providers/digitalocean/power-off.png
+      :alt: Power off your Droplet
+      :width: 200px
+
+#. Once your Droplet has been turned off, click "Resize",
+   which will take you to a menu with options to resize your VM.
 
    .. image:: ../images/providers/digitalocean/resize-droplet.png
       :alt: Resize panel of digital ocean
 
-   Further information on making more resources available to TLJH and verifying resource 
-   availability can be found in the How-To :ref:`howto/admin/resize`. 
+#. Decide what kinds of resources you'd like to resize, then click on a new VM
+   type in the list below. Finally, click "Resize". This may take a few moments!
+
+#. Once your Droplet is resized, **turn your Droplet back on**. This makes your JupyterHub
+   available to the world once again. This will take a few moments to complete.
+
+Now that you've resized your Droplet, you may want to change the resources available
+to your users. Further information on making more resources available to
+users and verifying resource availability can be found in :ref:`howto/admin/resize`.