Terminal
A real shell in your browser. How to move files in and out, show an image in the terminal, and what happens to a process you leave running.
SSH
Reach your account from your own machine. Why the port is probably not 22, why a password doesn't work, where the panel manages your authorized keys, and how to verify the server.
Task Scheduler
Schedule a repeating command with a standard crontab. The environment a job really gets, where its output is mailed, time zones, and jobs that run as the web user.