Update README

Author: matsk-sinch

README.md

@@ -15,14 +15,35 @@ This repository contains code snippets demonstrating usage of the
 ## Snippets execution settings
 When executing a snippet, you will need to provide some information about your Sinch account (credentials, Sinch virtual phone number, ...)
 
-This setting can be placed directly in the snippet source, or you can use an [environment file](.env.example), in which case the settings will be shared and used automatically by every snippet.
-Rename the `.env.example` file to `.env` and fill in the required values:
+These settings can be placed directly in the snippet source code, **or** you can use an environment file (`.env`). Using an environment file allows the settings to be shared and used automatically by every snippet.
 
+### Setting Up Your Environment File
+
+#### 1. Rename the example file
+
+**Linux / Mac:**
 ```bash
 cp .env.example .env
 ```
 
-Install dependencies using Poetry:
+**Windows (Command Prompt):**
+```cmd
+copy .env.example .env
+```
+
+Windows (PowerShell):
+```powershell
+Copy-Item .env.example .env
+```
+
+#### 2. Fill in your credentials
+
+Open the newly created [.env](.env) file in your preferred text editor and fill in the required values (e.g., SINCH_PROJECT_ID=your_project_id).
+
+Note: Do not share your .env file or credentials publicly.
+
+
+### Install dependencies using Poetry:
 
 ```bash
 poetry install