I’m making a few assumptions here:
The “site” is related to one domain. Or at least you want the other “versions” mirroring it. i.e. Your domain is somedomain.com and you want somedomain.net and similar to all point to it.
You have virtualmin installed at the “base” level. By that I mean if you go to https://yourVPSip:10000 it takes you to the Virtualmin login.
OK - here’s my thoughts on getting your site up and running:
Create a virtual server. Put your domain name in at the top, skip the description, put a password in for the admin & here’s what I do - put a custom username in for the Admin. Call it what you like. That effectively ends up being the “master” user for your domain.
In the Enabled features section - I’d untick everything except “Setup Website for Domain” & “Create MySQL database”.
Click the Create Server button. You 'll see some progress messages - everything should be successful. Now if you look in the left pane - you should see your newly created virtual server.
Now that’s the basics of creating a VirtualServer.
Now you’ll have a database associated with your VirtualUser - you’ll see this if you look in Webmin - Servers - MySQLDatabase server.
I’ve tinkered with permissions and a few other things here and each time things didn’t work. Then one time I noticed the little “advisory” msg in the screen asking me not to mess with SQL Permissions via webmin as it might annoy Virtualmin and could - was in my case - cause issues.
You want to manage your MySQL Database? Make sure your VirtualServer is in the dropdown box and click on Install Scripts below it.
Put a tick in phpMyAdmin and click on Install Options - Leave stuff at default and click Install Now.
You shouldn’t have issues here - if you do report back. Make note of any passwords it might spit out about the MySQL user or something. I can vaguely remember something popping up.
Now you can go to your website www.yourdomain.com/phpmyadmin
and you should get a login prompt. You should have the login & password. Restore your database. If it’s your first rodeo with phpMyAdmin - Google “phpMyadmin restore database” and you should have some good walkthroughs with pictures. Even Google “phpMyAdmin backup database”.
Now the last bit. FTP. Assuming you’re on Windows or similar. I like Filezilla - Google it and download and install. You’ll only need your admin user & password that you created when you created the VirtualServer earlier. For FTP to login - you only need really 3 things
IP or a hostname - go with IP less to worry about
User - your admin user (or any other user with FTP rights but let’s not complicate matters)
Password - your admin use password.
It’s a drag and drop interface.
Worst case scenario - in Virtualmin, delete the virtual server. This will remove any files you’ve FTP’d, any mySQL databases you created and any users. Get comfortable with stuff. Have a play.
Once you’ve got the php files FTP’d and the mySQL db restored and your site works as it should - wipe it down and try again. This time maybe enabling mail for domain, assuming you want emails at this domain. [You don’t have to but get comfortable!!]
p.s. You wrote “I have my domain pointed towards my nameservers which I setup with my VPS IP address.”
Why don’t you go to your Registrar’s control panel and use their nameservers for now and in the DNS bit put in a single @ entry pointing to your VPS IP address and a www entry pointing to the @. Keep stuff simple without bringing in the whole “manage your own DNS”?