Problem(s) getting Clear Line Theme to work

I insalled WordPress. Then I downloaded Clear Line Theme, uploaded and extracted it. It shows up on my site. BUT…it looks only similar to the screenshot. How do I get the Clear Line Theme that is be advertised in the screen shot?

Specifically, it has one category, followed by 2 more narrow ones under it that have small image spaces, followed by 2 narrow ones with image spaces under those, and then it returns to the one wider category, repeated a few times.

What I uploaded has only one wider category and that is all. Where is the “theme changer” that would help me?

I have an account on WordPress.com and does not allow use of the CLear Line Theme. Where is this “theme changer”?

Also, I wanted tags, not categories.

How is all this done. I have now spent more than 30 hours over 3 days trying to figure it out myself, so I tought I had better ask for help since I really did try.

Will anyone help me before I throw my kaptop against the wall?

Elskede