Help to fint theme

Hello,

I’m really new to wordpress, but have been coding webpages for some time now and i have an idea for a website, and need some guidance to find a suitable theme.
I would like the background-image to be a desk, and on the desk there are different objects, let’s say a pencil and a glass.
If you click on the pencile a window pops up with some text regarding pencils. if you click on the glass you get a pop up with info about the glass.

I would love any tips on how to do this.

Best regards,
Sindre