RTFM, bra https://tails.boum.org/doc/index.en.html Installing Tails on a USB stick https://tails.boum.org/doc/first_steps/usb_installation/index.en.html Install Tails onto the USB stick per the instructions above. Reboot your computer and hit whatever button gets you to the boot menu, select the USB stick and boot into Tails. When you get to that point, create an encrypted volume (file) on the same USB stick to store stuff like your PGP directory. https://tails.boum.org/doc/encryption_and_privacy/encrypted_volumes/index.en.html https://tails.boum.org/doc/encryption_and_privacy/truecrypt/index.en.html