I used to be really into these stuff a couple of years ago and I think I know what you need to do. 

First off, you need to create a FTP account to log into your server with. You do that in Cpanel under something called FTP accounts or something like that. 

Then you take the information you got when you created your FTP account and log in with that, like this:

FTP Server: ftp.yourdomainname.com

 FTP Username: FTPusername@yourdomainname.com

FTP password: ftp.yourdomainname.com

FTP Server Port: 21

If you dont have Cpanel on your domain, you should search for some similar kind of information.

This is my first post, so excuse me if anything is not up to protocol :)

You need to create an FTP account within your web hosting service.

There are other ways, but if you want to do it with IP, then open Start (Windows), search for "cmd", press enter and then type in:
ping "websiteyouwanttheIPfrom"

For example:
ping vgchartz.com

Result:
65.111.186.138

Hey, my host company finall gave me the ftp username/password. I can finally login to my cpanel and upload things using the "special" ftp account. But when I make my own ftp account and try to login it wont work.

Also, do you knoww where I put the html pages in? Do I need to name my html file something specific or do I have to make another folder in public_html?

@ Turkish, drop your .html files inside of the "public_html" folder, you don't need to create a extra folder to drop them in ;)

You need to select which page is visible when somebody visits your domain. You can do that in the control panel of your domain host.

Just make sure the html pages are linked correctly. The rest doesn't matter.

Congrats!
Just drop files in the folder.
Once you link a default homepage, then from there you just need to link all your pages together so you can go back and forth.

Also, you want your hompage to be named "index.html". The browser will be automatically redirected to index.html in a folder. If you dont have a index document in your public_html folder, people will see a file directory of all your files when they visit your site. 

Thanks, how do I chose wich files I make visible to my visitors? I dont see any such option in the cpanel. I made an index.html file but when I go to my website I still dont see anything. I have another html file in my public_html folder tho, something like parking-page?

Well you need to link your homepage on the web hoster to your domain.

I got my domain from dot.tk and there I can select my web hosting URL, for example:
Http://mywebhoster.personalname.com/index.html

(I wrote a capital "H" so that it breaks the link)

Hmmm, I'm gonna educate myself a bit further into these things. Will keep updated :)