Bump!
Hey BitcoinGirl.Club, please don't say you forgot about this thread once again.

As promised, I have written a PGP Tutorial for Linux (Ubuntu/Debian-based) users already. If there are any Linux users, you can follow this;
[Eng: Tutorial] PGP Signature - Encrypt/Decrypt message (Linux Only). Also, this list could be useful too;
I am trying to figure out how PGP works in Android. If I manage to understand, I will write a tutorial for Android users too.
Cheers!