I've experimented with cameras and equipment over the years and, to this day, continue to try new things.  However, there are some options that, for me, work really well.  And it's not limited to equipment, either: there are protocols and etiquette that need to be considered particularly when photographing people.  

Review the following articles to learn about the things that work (and have worked for me over the years).   Then consider slotting the skills and tools into your travel-photography toolkit.