And I need help setting everything up properly. Can anyone help me ?

Great.

Now you need to get a good 'webhost'.
The webhost will give you a set of "nameservers".

You'll have to point your domain to those nameservers (from your domain's control panel).

Alright, I did that. A few hours ago, I think. Actually, it was with name.com. They had 4 nameservers there. I deleted their 4, and put in the two nameservers of my host. Is that right?

Right. you did everything correct.

Now you have to wait a while for the domain to fully function,
as it takes time for Nameservers to propagate all over world, fully.

So about... maybe a day or two? Right? And then I got to my hosting, go to addon domains, fill out everything properly, and it will add and everything will be fine, right?
It says I can't do anything with their DNS stuff now or something because I don't use their nameservers... but I'm guessing my host will still let me, right?

Yep. cPanel -> Addon Domains -> [Add your domain there]

Though you *may* have to wait some time before the webhost detects that you've changed the nameservers of the domain.

Yeah, I thought so. I was just reading something, and they said it can take up to 48 hours... ah, well. Thanks. Reps added.

Welcome, buddy!

Always here to help ya.

Hey,
Congrats on your domain name!

Thanks, swastik2020.
But hey, Shadab. I got it done instantly, it turns out there was a problem with the nameservers. It was done in real time when it was fixed, no waiting was involved.