How can I safely download and install software on my device without introducing viruses or malware?

1. Research thoroughly.
2. Inspect downloads for suspicious content.
3. Backup data before installing.
4. Ensure your device is running the latest security patches.
5. Avoid downloading from unknown sources.
6. Download from secure HTTPS sources.
7. Check user reviews of software.
8. Install an up-to-date antivirus program.