Header image, identity, tags

Hello!

I have just activated Minimal Grid. It looks nice.
??

I have set up a header image, however it is not visible. How may I activate it?

I would like to see the identity of the site (title, description). How can it be done?

In the front page the posts are displayed with their tags. How can these tags be hidden?

Thanks a lot.

Greetings

Tamas

The page I need help with: [log in to see the link]