Add prereq install details

Author: PatAltimore

articles/blockchain/service/connect-truffle.md

@@ -16,8 +16,18 @@ In this quickstart, you use Truffle connect to an Azure Blockchain Service trans
 ## Prerequisites
 
 * Complete [Quickstart: Create a blockchain member using the Azure portal](create-member.md) or [Quickstart: Create an Azure Blockchain Service blockchain member using Azure CLI](create-member-cli.md)
-* Install [Truffle](https://github.com/trufflesuite/truffle). Truffle requires several tools to be installed including [Node.js](https://nodejs.org), [Git](https://git-scm.com/book/en/v2/Getting-Started-Installing-Git).
-* Install [Python 2.7.15](https://www.python.org/downloads/release/python-2715/). Python is needed for Web3.
+* [Node.js 10.15.x or higher](https://nodejs.org)
+* [Git 2.10.x or higher](https://git-scm.com)
+* [Python 2.7.15](https://www.python.org/downloads/release/python-2715/) Add python.exe to your path. Having Python version 2.7.15 in your path is required for Web3.
+* [Truffle 5.0.0](https://www.trufflesuite.com/docs/truffle/getting-started/installation)
+
+On Windows, an installed C++ compiler is required for the node-gyp module. You can use the MSBuild tools:
+
+* If Visual Studio 2017 is installed, configure npm to use the MSBuild tools with the command `npm config set msvs_version 2017 -g`
+* If Visual Studio 2019 is installed, set the MS build tools path for npm. For example, `npm config set msbuild_path "C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Current\Bin\MSBuild.exe"`
+* Otherwise, install the stand-alone VS Build tools using `npm install --global windows-build-tools` in an elevated *Run as administrator* command shell.
+
+For more information about node-gyp, see the [node-gyp repository on GitHub](https://github.com/node-gyp).
 
 ## Create Truffle project
 

articles/blockchain/service/connect-vscode.md

@@ -18,9 +18,9 @@ In this quickstart, you install and use the Azure Blockchain Development Kit for
 * Complete [Quickstart: Create a blockchain member using the Azure portal](create-member.md) or [Quickstart: Create an Azure Blockchain Service blockchain member using Azure CLI](create-member-cli.md)
 * [Visual Studio Code](https://code.visualstudio.com/Download)
 * [Azure Blockchain Development Kit for Ethereum extension](https://marketplace.visualstudio.com/items?itemName=AzBlockchain.azure-blockchain)
-* [Node.js 10.15.x or higher](https://nodejs.org/download)
+* [Node.js 10.15.x or higher](https://nodejs.org)
 * [Git 2.10.x or higher](https://git-scm.com)
-* [Python 2.7.15](https://www.python.org/downloads/release/python-2715/) Add python.exe to your path. Python version 2.7.15 in your path is required for Azure Blockchain Development Kit.
+* [Python 2.7.15](https://www.python.org/downloads/release/python-2715/) Add python.exe to your path. Having Python version 2.7.15 in your path is required for Azure Blockchain Development Kit.
 * [Truffle 5.0.0](https://www.trufflesuite.com/docs/truffle/getting-started/installation)
 * [Ganache CLI 6.0.0](https://github.com/trufflesuite/ganache-cli)