The internet can make trip planning a breeze. Check out these great online forums where you can gain first hand knowledge from other travellers!
Best forums for specific destinations: TripAdvisor Forums and Fodor’s Travel Talk
Best forum for European travel: Rick Steves Europe
Best forum for cruise ships: Cruise Critic Forums
Best forum for solo travellers: r/SoloTravel
Best forum for Disney planning: DIS Boards
Best forum for air travel: FlyerTalk