Warning
Create a Time Machine backup before major updates, disk operations, or security changes on macOS.
What you will achieve
Comfortable with Terminal in 15 minutes — enough to follow admin guides without fear.
1) Navigate filesystem safely
pwd
ls -la
cd ~/Documents2) Learn basic file operations
mkdir demo-folder
touch demo-folder/test.txt
cp demo-folder/test.txt demo-folder/test-copy.txt3) Use sudo deliberately
Only use sudo when a command explicitly requires admin rights and you trust the command.