Not sure if this is the best forum so let me know and I'll delete it if so.
I've setup a LAMP server on Ubuntu 14.04 which works fine the issue is, right now I can only access it through the public IP. I currently have a domain registered to me, but I got it from Freehosting.com so it points to the website I made there when I need it to point to my personal server now. I've done quite a bit of googling on the issue and most articles I find detail how to go from one online hosting company to a different one which is not what I need.
From what I can understand I need to point the nameservers of my domain to my server's public IP, however when I log on to do that and set the IP address to mine I get an error that I'm using the same domain name and I noticed the default one has
I only know the basics of nameservers, but apparently I need two and I thought the company I register my domain through had the name servers, but it seems like I actually need 2 name servers myself to point toward my IP is this correct? If so could I use BIND on my same PC like here https://help.ubuntu.com/lts/serverguide/dns-configuration.html or would I need a separate PC? I can't find much on how much resources name servers use, but I have a fairly weak PC(4gb ram ~3.4 ghz 4core amd cpu) so I'm not sure it would be able to handle all of that.
To summarize I'm trying to point a domain registered on freehosting.com to a LAMP server now. Thanks for the help and if there is any information left out that would be helpful let me know and I'll edit.