In the video, the presenter demonstrates how to protect a PC using AVG Antivirus. To begin, you need to download the online or offline installer from avg.com. The offline installer allows distribution to multiple devices without an internet connection. For installation on Windows 7, a specific KB file from the Microsoft website is required. The antivirus setup process involves examining system configuration and selecting features to install. It is recommended to customize the installation to disable unnecessary features like the firewall in a network environment. The setup size is around 584 MB and installation time varies based on system configuration. Once installed, the antivirus can be configured for maximum protection by adjusting settings such as malware detection and scanning preferences. Paid features include computer security and browser protection, while free features include file shield and behavior shield. The video also covers configuring settings for web traffic scanning, blocking specific websites, and scheduling scans. Deep scanning is recommended for thorough system checks.