Cleaned up prereqs

Author: w-azure

articles/iot-hub/iot-hub-managed-identity.md

@@ -18,9 +18,9 @@ In IoT Hub, managed identities can be used for egress connectivity from IoT Hub
 
 ## Prerequisites
 
-- Read the documentation of [managed identities for Azure resources](./../active-directory/managed-identities-azure-resources/overview.md) to understand the differences between system-assigned and user-assigned managed identity.
+- Understand the managed identity differences between *system-assigned* and *user-assigned* in [What are managed identities for Azure resources?](./../active-directory/managed-identities-azure-resources/overview.md)
 
-- If you don’t have an IoT hub, [create one](iot-hub-create-through-portal.md) before continuing.
+- An [IoT hub](iot-hub-create-through-portal.md) 
 
 ## System-assigned managed identity
 

articles/iot-hub/iot-hub-rm-rest.md

@@ -21,9 +21,9 @@ You can use the [IoT Hub resource provider REST API](/rest/api/iothub/iothubreso
 
 ## Prerequisites
 
-* Visual Studio.
+* Visual Studio
 
-* [Azure PowerShell](/powershell/azure/install-Az-ps).
+* [Azure PowerShell module][lnk-powershell-install]
 
 [!INCLUDE [iot-hub-prepare-resource-manager](../../includes/iot-hub-prepare-resource-manager.md)]
 

articles/iot-hub/iot-hub-rm-template.md

@@ -25,10 +25,9 @@ You can use Azure Resource Manager to create and manage Azure IoT hubs programma
 
 To complete this tutorial, you need the following:
 
-* Visual Studio.
-* An active Azure account. <br/>If you don't have an account, you can create a [free account][lnk-free-trial] in just a couple of minutes.
-* An [Azure Storage account][lnk-storage-account] where you can store your Azure Resource Manager template files.
-* [Azure PowerShell 1.0][lnk-powershell-install] or later.
+* Visual Studio
+* An [Azure Storage account][lnk-storage-account] where you can store your Azure Resource Manager template files
+* [Azure PowerShell module][lnk-powershell-install]
 
 [!INCLUDE [iot-hub-prepare-resource-manager](../../includes/iot-hub-prepare-resource-manager.md)]