Notes to myself about how to use GPG:

Export my own key for sending to others:
gpg --armor --export [my name]

Import another person's key:
gpg --import [key file]
or
gpg --keyserver [server] --search [their name]

Then sign their key and indicate that I trust it (GPG will prompt for degrees of trust):
gpg --edit-key [their name]
sign
trust
save