hi Markus,
For slider options” (appearance > theme options > slider options)
If you select the revolution slider in slider option then there is ” Revolution Slider Options ” at the bottom.
If you want to display in the home page this slider then check box must be selected. And if you want to display this slider on other page then you must keep the page id there.
finally click on save all changes.
And go to the revolution slider plugin you have installed at left bottom of dashboard.
Clickk on create new slider
create new slides and create give new alise name.
Then edit slides and add images on it.
After doing this you must see the slider.
Hope this may help you
Thanks
Sunil