Keep in mind that aside from encrypting your messages, you should also know about key verification, message signing, file encryption. Please make sure you refer to these sections in the given resources. Here's a list of guides to help you get started and on the way:
*[https://help.riseup.net/en/security/message-security/openpgp/best-practices Message Security] - by the RiseUp folks. A very thorough guide on all aspects of PGP/GPG encryption. Windows and Linux. 11 languages.
*[https://github.com/freedomofpress/encryption-works/blob/master/encryption_works.md#pretty-good-privacy-pgp-email-encryption Encryption works] - A good introduction to various topics related to public key encryption and more. Originally written by Micah Lee of the Intercept.
*[https://securityinabox.org/en/guide/thunderbird/windows Setting up GnuPG and email with Thunderbird] - from the Security in-a-box project. Windows users. 13 different languages
*[https://www.mailvelope.com/en/help Mailvelope documentation] - Browser plugin for GPG encryption. Works with most webmail clients. For Mozilla Firefox and Google Chrome.
*[http://support.gpgtools.org/kb/how-to/introduction-to-cryptography GPGtools documentation] thorough introduction to GPG basics and [http://support.gpgtools.org/kb/how-to/first-steps-where-do-i-start-where-do-i-begin-setup-gpgtools-create-a-new-key-your-first-encrypted-mail integration with Apple computers and Apple mail]
<br />
}}