How does one go about encrypting a message using a public key?
Find the place in your trusted email programms settings to add the recipients public key and select it when sending the mail.
If you want to be able to answer their questions you or identify yourself in follow up emails, you should also generate your own key.
Also should I use a burner email ID to send the encrypted message to guardian?
Anyone spying on you will only be able to see that you contacted the guardian but not what you told them. Having a burner would mean someone sees you contacting the burner service and than the newspaper. That said you should probably make a new email for it but I don’t know what exactly you understand as a burner email.
Does it count if I have to google which key to hold down to enter the boot menu or bios every time? There are 12 function keys and esc.