Here's a tip if you're new to Linux: to display a manual page on a certain subject, enter "man command" in a terminal window where command is the name of a Linux command.
You can try this on your own with the example shown here. This will display the manual page for the Linux command "cp" (which is the copy command). Use the spacebar to see each additional page and type "q" (for "quit") when you've read enough.