bluehorizons has 8 php's, 1 styles.css, & 1 images folder in it, this is from the Presentation Page:
You can find additional themes for your site in the WordPress theme directory. To install a theme you generally just need to upload the theme folder into your wp-content/themes directory. Once a theme is uploaded, you may activate it here.
The classic & default folders were the only thing in the themes directory before I just added this bluehorizons folder, I assumed it was the whole folder because of the sentence above & the fact that that is all that was in there already, 2 folders, but yes, they all have a styles.css file in them. The bluehorizons comment section showed that people were using it so I assume it works, which is why I'm sure I need to set something else on my end, perhaps because I'm under Xampp right now. Anything else? TIA.