Decide on a destination. Do you want to climb glaciers and kayak in Alaska, dive in the Caribbean or taste wines in France? Or maybe you want to sail across the Atlantic or through the Panama Canal.
Select a cruise line that appeals to your budget and lifestyle. These range from the five-star elegance of Crystal Cruises' trio of ships to the raucous booze cruises aboard the Carnival Cruise Line's fleet of Fun Ships. Consider theme cruises where you can meet people with similar lifestyles such as singles, gays and lesbians, or senior groups.
Decide how long you'd like to cruise. Some lines offer three-day sailings; others start at seven days and can extend a month or more for around-the-world adventures.
Consider essential amenities when making your decision. Do you want to ice skate, rock climb, gamble or relax in a spa? Features vary by ship, though virtually all have a gym, pool, entertainment and dining options ranging from black tie to poolside barbeques.
Select a stateroom. Options range from butler-staffed suites to inside staterooms without portholes, and they're priced accordingly. Frequent cruisers regularly get upgrades.
Select your ship. Cruise lines are churning out new ships all the time. Do you want to celebrate a new ship's inaugural sailing season, or relax on an older ship whose crew has worked out the inevitable service kinks?
Book early. Many cruise lines offer substantial discounts when you book several months or more in advance--and there are always off-peak specials. Check cruise company Web sites for hot Internet-only deals.
Make reservations for shore excursions in advance of your ship's departure. Although you can make reservations when you get onboard, many of the popular trips fill up quickly.
