Getting a custom domain name for your site is important, because the default domain maybe too long and easy to forget.
If you own a site you should understand why you should get a custom domain name. Before you continue reading you should know that this free domain extension are tk, ml, cf, ga, gq. Not wasting much them you start by;
• Going to https://my.freenom.com .
• Check if your desired domain name is free and available.
• If you confirm that your domain name
is free and available, the registration
form,will show up. Fill the form carefully.
• Submit your registration and if it’s
successful,
• Log into your freenom account here , or you can login with your facebook or google account.
• Click on My Domain. You will see it under services.
• At this point you will see the domain name that you registered. Now click on manage domain.
• Now four Options will show up – they are:
Information Upgrade
Management Tools
Manage Freenom DNS
• Now click on management tools, after clicking on it you should see Nameservers, click on it.
• Under nameserver, tick use custom nameservers.
• Fill the nameserver of your host e.g
ns1.yourhost.com
ns2.yourhost.com
• Now click on Change Nameservers.
You are DONE!. You can now start hosting your domain name.

source' https://www.nextcinfo.com/2018/02/how-to-get-free-domain-name.html?m=0

what is name server and how to edit!? I example please

Stbillion:
what is name server and how to edit!? I example please

which hosting are you using