Clarified installation instructions and added legacy instructions

Author: SableRaf

content/tutorials/text/getting-started/index.mdx

@@ -16,13 +16,19 @@ This tutorial was adapted from the book, [Getting Started with Processing](/book
 
 ## Getting started
 
-Welcome to Processing! Start by visiting [https://processing.org/download](https://processing.org/download) and selecting the Mac, Windows, or Linux version, depending on what machine you have. Installation on each machine is straightforward:
+Welcome to Processing!
 
-- On Windows, you'll have an installer. Double-click it, and Processing will be installed. After installation, you can find Processing in the start menu or on your desktop. Double-click the icon to start.
-- The macOS version is an installer image. Double-click it and drag the Processing icon to the Applications folder. Then launch Processing by double-clicking the icon in the Applications folder
-- The Linux and Raspberry Pi versions are available on the Snap Store. Installation instructions for Snap and Processing are available on the store page.
+_Note: For older Processing versions (4.3.4 or earlier), see the [legacy installation instructions](https://github.com/processing/processing4/wiki/Legacy-Installation-Instructions-(pre-4.4)) instead._
 
-With any luck, the main Processing window will now be visible. Everyone's setup is different, so if the program didn't start, or you're otherwise stuck, visit the [troubleshooting](https://github.com/processing/processing4/wiki/Troubleshooting) page for possible solutions.
+To begin, [download the latest version of Processing](https://processing.org/download). 
+
+- On **Windows**, Processing comes as a `.msi` installer file. Locate the file in your Downloads folder and double-click it to install Processing.
+- On **macOS**, Processing comes as a `.dmg` disk image. Open the file from your Downloads folder, then drag the Processing icon to your Applications folder.
+- On **Linux** and **Raspberry Pi**, Processing is available on the Snap Store. The download page will redirect you there. Follow the installation instructions on the Snap Store page. 
+
+After the installation is complete, launch Processing by double-clicking the icon. On Windows and Linux, you can find it in the Start menu or on your desktop. On macOS, it should be in the Applications folder.
+
+With any luck, the main Processing window will now be visible. However, if the program didn't start, or you're otherwise stuck, visit the [troubleshooting](https://github.com/processing/processing4/wiki/Troubleshooting) page for possible solutions.
 
 ![The Processing Development Environment.](./Fig_02_01.png)