I forget how command foo works. Where can I find out?
A quick Google search will often be the easiest way to find the information you’re looking for. However, Linux provides documentation through a program called ‘man’ (short for manual) which allows you to read the ‘man page’ for any command you like. Man pages can be intimidating at first, but once you get to know how they’re laid out, they can be your best friend. To call up the man pages for a particular command, you simply type ‘man *’ where * is the command you want to know more about (you can even type ‘man man’ if you like). The man page will list the command name, its usage, and an explanation of any options the command takes. For example, you can see the man page for ‘pwd’ (“print working directory”) with ‘man pwd’ If the man page is longer than one “screen” (the size of your terminal window), the bottom line of the screen will show “–MORE–“. You can press