Baby, let's cruise away from here.  Don't be confused, the way is clear ... In "The Cruise Handbook," Lonely Planet proffers advice on how to choose the right cruise, from LGBTQ and family-oriented voyages to journeys with an extra jolt of adventure.  Aimed at cruising rookies and seasoned sailing pros alike, the tips cover history, cruise etiquette, lingo and reducing your environmental impact onboard, among other things.  Here are some destinations to whet your appetite.  Bon voyage.