The two basic four ball patterns are called the asynchronous fountain and the synchronous fountain. The asynchronous fountain has the juggler throwing balls alternating between his left hand and his right (in two columns, never throwing two balls at the same time.) This pattern is easier to learn if you are familiar with the 3 ball cascade (“the” juggling pattern… looks like a pretzel), because it follows the same rythm of tosses (right, left, right, left). The Synchronous fountain is where the juggler throws the balls in sync with one another, throwing two at a time, one from each hand. This is slightly harder to get the hang of because you have to focus on two simultaneous tosses, and you have to keep them very consistant with one another so you can throw the next pair.

That’s my two cents for the beginner 4 ball juggler. It looks cool, and it’s pretty impressive to the general public.