local host to server

So I created my site on a localhost and transferred it over to a server using a FTP (and my host site’s help). Now I can see my site live, but I can’t figure out how to access the backend of the wordpress admin page. For example, if I make changes on my localhost, it obviously won’t represent on the site on the server. I’m pretty new to all of this, so the technical stuff is getting to me. I’ll take any advice I can get! Thanks!