Learn How to Play Association Croquet
The best way to learn how to play Association Croquet is to play Golf Croquet with someone. This will teach you how to swing a mallet, hit a ball, run a hoop, and the order in which the hoops must be run in Six-Wicket Croquet. Then have someone teach you how to play Association Croquet. This will teach you two-ball shots, and running breaks.
But if you want to do some learning on your own, visit some coaching websites, and read some of these articles.
You can buy a book or DVD about learning Asociation Croquet.
Don't spend too much time reading — get out there and play!