New to drupal

hello i have working website on drupal.say and i want create and than migrate all content from example .org to so that i will behave like
so please guide me step by step

What do you exactly want to do?

Do you want to manage these two domains separately? If not, you can simply create a domain alias.

If you want to make a copy of the site and manage them separately, you can

  1. create a subdomain under the same user via [b]DH panel --> Domains --> Manage Domains --> Create New/Sub-domain
  2. ssh to your new subdomain and copy all files from to

If your site uses mysql database, you may want to create a copy of the database as well. The easiest way to make a copy of the database is using mysqldump