Updates

Author: madeline-underwood

content/learning-paths/servers-and-cloud-computing/cobalt/1-create-cobalt-vm.md

@@ -20,13 +20,13 @@ To create a Cobalt 100 VM, follow these steps:
 
 1. Sign in to the [Azure Portal](https://portal.azure.com/).
 2. Select **Create a resource → Compute → Virtual machine**.
-3. Complete the *Basics* tab:
-   ![Azure Portal – Basics tab for the VM wizard#center](images/create-cobalt-vm.png)
+3. Complete the **Basics** tab as shown in the figure below:
+   ![Azure Portal – Basics tab for the VM wizard#center](images/create-cobalt-vm.png "Configuring the Basics tab")
    Cobalt 100 powers the Dpsv6-series. Selecting **Standard_D4ps_v6** creates a Cobalt VM with four physical cores. You can select a different size if you need more or fewer cores.
 4. Upload your public SSH key or generate a new one in the wizard.
-5. Disallow public inbound ports for now.
-6. Accept the defaults on the **Disks** tab.
-7. On the **Networking** tab ensure that a **Public IP** is selected. You will need it to connect later. Leave the NSG settings as **Basic** for now. 
+5. For **Public inbound ports**, select **None**.
+6. On the **Disks** tab, accept the default options.
+7. On the **Networking** tab, ensure that a **Public IP** is selected. You will need it to connect later. Leave the NSG settings as **Basic** for now. 
 
 Click **Review + create** followed by **Create**. Azure now deploys the VM and the automatically-generated Network Security Group (NSG). Provisioning takes ~2 minutes.
 

content/learning-paths/servers-and-cloud-computing/cobalt/2-open-port.md

@@ -1,5 +1,5 @@
 ---
-title: Open an inbound port in the Network Security Group
+title: Open inbound ports in the Network Security Group
 weight: 3
 
 ### FIXED, DO NOT MODIFY
@@ -8,16 +8,16 @@ layout: learningpathall
 
 ## Allow external traffic to TCP ports 22 (SSH) and 8080
 
-Every new virtual machine created through the Azure wizard is associated with a **Network Security Group (NSG)**. An NSG acts like a stateful firewall – if no rule explicitly allows traffic, Azure blocks it.
+Every new virtual machine created through the Azure wizard is associated with a **Network Security Group (NSG)**. An NSG acts as a stateful firewall – if no rule explicitly allows traffic, Azure blocks it by default.
 
 In this step you will open port 22 for SSH, as well as port 8080 so that a web application running on the VM is reachable from your IP for testing. Substitute a different port if required by your workload, or a different IP range if you'd like broader accessibility.
 
-1. In the Azure Portal open the newly created VM resource and click **Networking → Network settings** in the left nav.
+1. In the Azure Portal, open the newly created VM resource and click **Networking → Network settings** in the left nav.
 2. Select the **Network security group**.
-3. Click on **Create Port Rule** and from the drop-down men select **Inbound port rule**
+3. Click on **Create Port Rule** and from the drop-down menu select **Inbound port rule**
 4. Fill in the form, specifying **My IP address** as the source and 22 as the destination port:
    ![Add inbound security rule with source of my IP and destination port 22#center](images/create-nsg-rule.png)
 5. Click **Add**.
 To open port 8080, follow steps 3 through 5 again, but instead choose port 8080 for the destination port.
 
-You have now opened ports 22 and 8080 to your IP. In the next step you will verify connectivity.
+You have now opened ports 22 and 8080 to your IP. In the next step, you will verify connectivity.

content/learning-paths/servers-and-cloud-computing/cobalt/_index.md

@@ -6,10 +6,10 @@ minutes_to_complete: 10
 who_is_this_for: This is an introductory topic for developers and DevOps engineers who want to deploy an Arm-based virtual machine on Azure and expose an application port to the internet.
 
 learning_objectives:
-    - Deploy an Arm-based Cobalt 100 virtual machine (VM) on Microsoft Azure.
-    - Connect to the Cobalt 100 VM using SSH.
-    - Configure an inbound TCP port in the associated Network Security Group (NSG).
-    - Verify external connectivity to the newly opened port.
+    - Deploy an Arm-based Cobalt 100 virtual machine (VM) on Microsoft Azure
+    - Connect to the Cobalt 100 VM using SSH
+    - Configure an inbound TCP port in the associated Network Security Group (NSG)
+    - Verify external connectivity to the newly-opened port
 
 prerequisites:
     - A Microsoft Azure subscription with permissions to create virtual machines and networking resources