Linux terminal basics for beginners
You rarely need the terminal on a beginner system, but a few commands are handy.
pwdshows where you are.lslists files.cd foldermoves into a folder.cpandmvcopy and move files.mkdirmakes a folder.sudoruns a command as administrator.apt updateandapt upgradeupdate Debian-based systems.man commandshows the manual.
Be careful with commands you do not understand, especially sudo.