Can't login to WP: 404 File Not Found

So I was working in WordPress with my Photocrati theme, and built up the basic site in about 2 or 3 hours. But every time I loaded https://www.sidneyreed.com, it would make the blog template the home page.

I really don’t know much about web building, so I stuck to the template. But under General Settings, I saw that you could change the 2 URL sections. One is the url viewers need to type to reach the page, and the other is the url where my files are stored.

That’s about all I know. I changed it from https://www.sidneyreed.com to https://www.sidneyreed.com/home thinking that would somehow fix the problem of defaulting to the blog instead of the homepage.

Now I can’t log in to wordpress to fix the problem. I get a “Page Not Found: 404”. I guess it’s looking for files that don’t exist according to that url. So I somehow moved the entire website?

Remember, I need VERY basic instructions. Someone already told me I need to FTP into my website to fix it. Can someone email me extremely basic, step by step instructions? I have Cyberduck but never used it before. And I’m hosted through FatCow. And by basic, I mean literally holding my hand and walking me through each step.

Thanks so much. I can’t believe one little thing messed it all up. There should be a warning label next to that tab in General Settings!