Head to the library or go online to learn as much as you can about the sport. Consider buying a video that shows the basic skills and maneuvers and learn them by heart. There are also whitewater rafting classes that teach you the basic techniques before you even get into moving water.
Make sure your swimming skills are first-rate. If not, plan on getting better before heading to the rapids.
Do not go alone. Either hire a guide, join a group, or take a buddy along. "Guided trips are best for groups and families who have never been on a trip and who are considering running rivers with rapids rated Class III or better," says David Brown, Executive Director of America Outdoors, the nation's leading association of outfitters and guides. "Even some Class II streams may be enjoyed more fully if they are guided since all the equipment and instruction come with the trip price."
Do upper body exercises (weight training is optimal) to ensure you have the strength to handle paddling in strong waters. If you're not in reasonably good physical condition, you shouldn't attempt rafting.
Do not raft in the dark. Allow plenty of time for the trip back, so you'll be safely on the ground when darkness falls.
Check the local regulations. Some states do not allow rafters under the age of 12.
Do not drink alcohol before or during a trip. You will not only endanger yourself, you'll also be a risk to other rafters.
Choose a lifejacket you feel comfortable in. Avoid oversized vests. "Always, always wear personal floatation devices (lifejackets) on whitewater rivers," says Brown. "This is standard procedure for professionally guided trips and should also be practiced by those paddling on their own."