Redeeming an ESET HOME Security Premium key is really simple, just follow these steps:
Download the free trial from HERE,
Open the downloaded ESET program,
Go to Help and support > Activate License,
Type or copy/paste your ESET-issued activation key into the Activation key field and click Continue,
Ensure you type the activation key exactly as it is, including the hyphens. If you copy/paste the activation key, ensure you do not accidentally select additional space around the text,
Click Activate,
Click Done. You have successfully activated your product.