How do I use the windows command prompt?

Answer 1

press start + R , run dialog will open type cmd and hit enter to open compand prompt.

or just search in start menu

after comand prompt is open type your commands

Answer 2

Be more specific what u want to do with command?

Open command prompt and enter help
it will give u all the available commands

Answer 3

They do tend to hide it these days

Answer 4

if u want to learn command line go to codecademy

https://www.codecademy.com/courses/learn-the-command-line