All right, this is my first essay. It isn't the longest thing ever, but oh well. It is non-magic related, so maybe it should be in the Off-Topic section, but I wanted to help the beginning jugglers here.
How to start
Buy a copy of The Complete Juggler
. It comes with free scarves. If you have never juggled before, start learning to juggle scarves. That section is right in the beginning of the book. Learn some tricks, and then move on to juggling balls.
What juggling balls to get
The best juggling balls are the $35+ (each) silicon balls. If you are that serious about juggling, and you have the money, get them.
I don?t recommend getting the silicon balls right away. Instead get lacrosse balls. They are cheap, and are VERY similar to the lacrosse balls.
If you have absolutely NO money, cut slits in tennis balls and drop in 25-40 pennies. These will not bounce when you drop them, which is good for the beginning juggler.
Other books and videos
Complete Teach Yourself Juggling
Beyond the Cascade
Ball Juggling Encyclopedia
Hope this helps. Feel free to ask questions.