Standardized the "Before you begin" section between 2 articles.

Author: DennisLee-DennisLee

articles/virtual-network/manage-network-security-group.md

@@ -22,7 +22,7 @@ Security rules in network security groups enable you to filter the type of netwo
 
 [!INCLUDE [updated-for-az](../../includes/updated-for-az.md)]
 
-First, sign up for a [free Azure account](https://azure.microsoft.com/free), if you don't already have one. Then complete one of these tasks before starting steps in any section of this article:
+If you don't have one, set up an Azure account with an active subscription. [Create an account for free](https://azure.microsoft.com/free/?ref=microsoft.com&utm_source=microsoft.com&utm_medium=docs&utm_campaign=visualstudio). Then complete one of these tasks before starting steps in any section of this article:
 
 - **Portal users**: Sign in to the [Azure portal](https://portal.azure.com) with your Azure account.
 

articles/virtual-network/virtual-network-network-interface-vm.md

@@ -27,15 +27,15 @@ If you need to add, change, or remove IP addresses for a network interface, see
 
 [!INCLUDE [updated-for-az](../../includes/updated-for-az.md)]
 
-Do these tasks before completing steps in any section of this article:
+If you don't have one, set up an Azure account with an active subscription. [Create an account for free](https://azure.microsoft.com/free/?ref=microsoft.com&utm_source=microsoft.com&utm_medium=docs&utm_campaign=visualstudio). Then complete one of these tasks before starting steps in any section of this article:
 
-- If you don't have one, set up an Azure account with an active subscription. [Create an account for free](https://azure.microsoft.com/free/?ref=microsoft.com&utm_source=microsoft.com&utm_medium=docs&utm_campaign=visualstudio).
+- **Portal users**: Sign in to the [Azure portal](https://portal.azure.com) with your Azure account.
 
-- If using the [Azure portal](https://portal.azure.com), sign in with your Azure account.
+- **PowerShell users**: Either run the commands in the [Azure Cloud Shell](https://shell.azure.com/powershell), or run PowerShell from your computer. The Azure Cloud Shell is a free interactive shell that you can use to run the steps in this article. It has common Azure tools preinstalled and configured to use with your account. In the Azure Cloud Shell browser tab, find the **Select environment** dropdown list, then pick **PowerShell** if it isn't already selected.
 
-- If using PowerShell commands to complete tasks in this article, either run the commands in the [Azure Cloud Shell](https://shell.azure.com/powershell), or run PowerShell from your computer. The Azure Cloud Shell is a free interactive shell that you can use to run the steps in this article. It has common Azure tools preinstalled and configured to use with your account. This tutorial requires the Azure PowerShell module version 1.0.0 or later. Run `Get-Module -ListAvailable Az` to find the installed version. If you need to upgrade, see [Install Azure PowerShell module](/powershell/azure/install-az-ps). If you're running PowerShell locally, also run `Connect-AzAccount` to create a connection with Azure.
+    If you're running PowerShell locally, use Azure PowerShell module version 1.0.0 or later. Run `Get-Module -ListAvailable Az.Network` to find the installed version. If you need to upgrade, see [Install Azure PowerShell module](/powershell/azure/install-az-ps). Also run `Connect-AzAccount` to create a connection with Azure.
 
-- If using Azure command-line interface (CLI) commands to complete tasks in this article, either run the commands in the [Azure Cloud Shell](https://shell.azure.com/bash), or run the CLI from your computer. This tutorial requires the Azure CLI version 2.0.26 or later. Run `az --version` to find the installed version. If you need to install or upgrade, see [Install Azure CLI](/cli/azure/install-azure-cli). If you're running the Azure CLI locally, also run `az login` to create a connection with Azure.
+- **Azure Command-line interface (CLI) users**: Either run the commands in the [Azure Cloud Shell](https://shell.azure.com/bash), or run the CLI from your computer. Use Azure CLI version 2.0.26 or later if you're running the Azure CLI locally. Run `az --version` to find the installed version. If you need to install or upgrade, see [Install Azure CLI](/cli/azure/install-azure-cli). Also run `az login` to create a connection with Azure.
 
 ## Add existing network interfaces to a new VM