1.10 Linux Terminal Commands for Beginners and 5 More Linux Terminal Commands for Beginners made me understand the basic Linux commands that I would use as a beginner.
1.How to Add SSH Public Key to Server gave me a new view about public keys and how to create them.
1.Basic C language helps me learn the basic of C language.
1.How to Set File Permissions in Linux is about many kinds of permission related to file or directory.
1.gpg - Unix, Linux Command is about commands for encryptng, decrypting, and signing.