New user question - how do I import my wordpress backup to flywheel?

This is a simple newbie question. I have an active wordpress website and want to clone it to do development on flywheel before I go live with changes. How do I do that? Does flywheel have a user instruction manual or website? I can’t find one.
Thank you!

These wp plugins could be useful for you: All in One WP Migration / Duplicator.