I just think you skipped Please read this, before you start!
Dont understand it wrong, but your question is out of the scope of hestia, we expect that you know how to use a shell command (for example ls -ll / to list all root directories).
I would suggest to start working on your basics, like setup a webserver on your own, install nginx or apache2, manualy configure it and get it to work. If you can do that, you should have also already got the most needed basicy to work with hestia.