1. Research and read reviews of antivirus software to find the best one for your computer.
2. Compare different programs and decide on the one that offers the most complete protection while being compatible with your computer system.
3. Download the antivirus program onto your computer.
4. Follow the instructions provided to install the software.
5. If needed, follow additional instructions to customize the settings of your program and configure it for optimal performance.
6. Update the software regularly to ensure maximum protection.