Is it possible to view articles but to have the title above the image. Is it possible to switch those possitions? So at first can see the article image and under it the title.

Yes,
You can override K2's template and modify them to your liking.
Read here to do so getk2.org/documentation/tutorials/174-templating-with-k2-and-the-concepts-of-sub-templates

The blocks can be easily located by the HTML comments in the code.