What did I do wrong

looks like your theme’s CSS isn’t there. Try uploading your entire theme again and see if that fixes it.

I am a newbie so bear with me when I ask. Do I upload from Ftp.

Yes, that would be the easiest way to get your theme to your host. If you do not have an FTP client, FileZilla is a a decent free option.

I do have filezilla.
Can you tell me how to do it. So i have a reference. Thanks.

https://wiki.filezilla-project.org/Using