GPG - Encrypt and Decrypt Files with a Key on Linux
How to export and import keys with GPG
A Practical Guide to GPG Part 1: Generate Your Public/Private Key Pair
How To Make a PGP Keypair using GPG and Communicate In Absolute Privacy (Linux/Mac) Public & Private Keys + Encrypt & Decrypt Messages - Sick Codes - Security Research, Hardware & Software
Windows
GPG, Strong Encryption And Digital Signing Made Easy | Kaspersky official blog