Update README.md

Updated instructions for installing on different VS versions.

README.md

@@ -16,8 +16,23 @@ The extension adds vertical column guides behind your code. This is useful if yo
 [![Visual Studio Marketplace Downloads](https://vsmarketplacebadges.dev/downloads-short/PaulHarrington.EditorGuidelines.svg)](https://marketplace.visualstudio.com/items?itemName=PaulHarrington.EditorGuidelines)
 
 ## Getting Started
-[Download](https://marketplace.visualstudio.com/items?itemName=PaulHarrington.EditorGuidelines) and run the extension (VSIX) for Visual Studio 2012 or later from the [Visual Studio Marketplace](https://marketplace.visualstudio.com/items?itemName=PaulHarrington.EditorGuidelines) or, from within Visual Studio, search for "Editor Guidelines" in the "Extensions and Updates" UI.
 
+You can either download the extension (VSIX) from the Visual Studio Marketplace and manually install it, or intall it from within Visual Studio itself.
+
+### Download from the Visual Studio Marketplace
+There are two versions in the Visual Studio Marketplace
+- [Download for Visual Studio 2022](https://marketplace.visualstudio.com/items?itemName=PaulHarrington.EditorGuidelinesPreview)
+- [Download for Visual Studio 2015, 2017, 2019](https://marketplace.visualstudio.com/items?itemName=PaulHarrington.EditorGuidelines)
+
+Once downloaded, double-click on the downloaded file (.VSIX) and follow the prompts to install it into Visual Studio.
+
+### Install from within Visual Studio
+- Visual Studio 2019 and 2022: Select "Manage Extensions" on the "Extensions" menu. Search for "Editor Guidelines" in the Visual Studio Marketplace.
+- Visual Studio 2015 and 2017: Select "Extensions and Updates..." from the "Tools" menu. Search for "Editor Guidelines" in the Visual Studio Marketplace.
+
+You will then have to close and restart Visual Studio for the extension to be fully installed.
+
+## Usage
 Control guidelines via the context (right-click) menu on the editor surface. You will see a *Guidelines* flyout with three commands:
 
 ![GuidelinesContextMenu](marketplace/images/ContextMenu.png)
@@ -38,7 +53,7 @@ You can change the guideline color from the Fonts and Colors page in `Tools|Opti
 ![GuidelinesToolsOptions](marketplace/images/FontsAndColors.png)
 
 ## .editorconfig support (VS 2017 or above)
-For VS 2017 and VS 2019, the position of guidelines can be overridden via settings in .editorconfig files.
+For VS 2017, VS 2019 and VS 2022, the position of guidelines can be overridden via settings in .editorconfig files.
 Set the `guidelines` property to a list of column values. The following example sets guidelines at columns 80 and 120 for C# and VB files and a single guideline at column 80 for all other files.
 
 ```ini