I love to water ski; water skiing is my favorite hobby. In the summer, I water ski at Lake Panorama in Panora, IA. And I'm also on the ISU Waterski Team
If you want to learn how to water ski, water-skiing.org is the best place. They have tutorials that will teach you how to get started water skiing, how to get up on two skis, how to stay up on two skis, how to go over the wake, and how to get up on a slalom ski.
Also, you can talk to other water skiers using their water skiing message board. If you want to learn more about wakeboarding at ISU, check out the ISU Waterski Team's page.