Laravel PHP Command Not Found

Question

I successfully installed Laravel using Composer, but when I try to run "laravel" in my terminal, I receive the following error:

-bash: laravel: command not found

If I read the instructions on the official website, I must:

Make sure to place the ~/.composer/vendor/bin directory in your PATH so the laravel executable is found when you run the laravel command in your terminal.

However, I am unfamiliar with terminal console commands, thus I don't know how to.

Could you please aid me in that?