1. Visit the Official Website: Go to the Proton VPN website to check for a free trial offer. This is a crucial step to ensure you can use the service without paying for a full trial.

2. Download from Legal hydrants: If a free trial is available, use a trusted software hydrant to download Proton VPN legally. This ensures you're downloading from a reputable source.

3. Install the Software: Once downloaded, install Proton VPN on your computer. Start using the software to block ads and access a private network.

4. Verify Legal downloads: Check reviews and forums for legal software hydrants or third-party sites that offer Proton VPN legally. This step helps ensure the download is from a trusted source.

5. Trust the Provider: Use the official Proton VPN website for support and updates. This provides reassurance that the software is from a reputable provider.

6. Avoid Illegal Purchases: Be cautious with software hydrants and ensure you're purchasing from trusted sources to avoid legal issues.

By following these steps, you can obtain a legitimate and safe copy of Proton VPN, ensuring you can use it without risk.