Learning how to juggle clubs is a bit difficult at first. Even if you know how to juggle balls already, the added difficulty of flipping the clubs and catching them on the handle makes it hard. The only way to really learn how to juggle clubs is to continually practice.
In this video I recommend starting with one club and getting comfortable with flipping and catching. This movement will help you build a solid foundation.
After learning how to do the correct flip and catch, you will have to incorporate 2 clubs and then you’ll quickly want to move to 3 clubs. One thing that may help you is to throw the clubs higher and let them spin slowly. This will help you when you are first learning. Eventually you’ll be able to bring the pattern down faster and tighter.