Let me introduce a command that can help you understand all others.
Whenever you are uncertain about how to use a command, just type man <command> to access its manual.
It offers detailed and quite extensive information.
The screenshot below shows just a small part of the output.
💡 To exit this screen just type q
Whenever you dont need such an extensive information but just a quick overview of a command, you can use tldr: https://tldr.sh/.
It is not built in command, you have to install it using-
npm install -g tldr
Now you can run tldr <command> to get a concise summary and practical examples of common uses.
Although tldr pages aren’t a substitute for man pages, they serve as a handy tool for quickly grasping the basics of a command. You can always revisit the man page for more detailed information on the various options and parameters.