I recently turned my Raspberry Pi into a web server, and now I installed Wordpress on it. Everything is going excellently, but when I went to change the theme from default, I found I need my hostname, FTP username, and FTP password. I didn't see this as a major problem, so since I host my webpage on my 'Pi I put in "localhost" and my MySQL username/password for the server I set up.
It popped up an error saying it failed to connect to the FTP server. Since I am still fairly new to Wordpress and webhosting, could someone please tell me what I should have used?