Hi
there are many youtube videos about Bricks conditions.
I think a very good one is this one:
I guess this video will point you into the right direction. With conditions, I think you always have to test them yourself on your site.
A condition that I use many times inside my loops which only shows the text element if {post_terms_post_tag} (=taxonomy terms assigned to a post) in the found post are not empty, is this one:
Cheers
Patric