“Whether Team Handball is played on a court, a field, or the beach, it’s a fast-paced strenuous sport that kids will love. Olympic-style Team Handball is similar to soccer, but played on a court using hands rather than feet. The official court is slightly larger than a basketball court and the ball is smaller than a soccer ball.
Olympic Handball is easily adapted so you don’t have to obsess about the equipment and court.”
Learn to play Olympic sports – About.com (Canada)
It is important however to know the basic rules. A short guide to the rules of Handball published by the European Handball Federation is available here.
The International Handball Federation publishes the full version of the official rules here.