Here are some of the tips I've picked up over the years, as well as some website and app recommendations.
10 Things NOT to do in New York City
Use a money belt
Photo Themes
Navigating Trains
Frequent Flyer Program Misconceptions
Podcasts
Indie Travel Podcast
Katia and Kyliemac Podcast
WDW Today
This Week In Travel
Disney Dish Podcast
Disney
Turn off the Wifi on your phone