Kolbajen, there are other ways depending on your filter/ pool configuration (not!! that Dave's advice isn't good)
If you have 2 or more suction sources, close all but 1 and try again (Dave has already told you the method of getting a pump to prime - try using it with only 1 suction source open --- if it works, open the other sources 1 at a time s-l-o-w-l-y, so that you don't kill the prime, if you see a bunch of air entering the pump, close the valve until it refills with water and slowly crack it open again).
With any luck, this will be enough, if not - we'll talk you through whatever you need to do to prime your system :-D