Meteors are small pieces of rock and dirt varying in size from tiny dust particles to sand grains with an occasional pebble thrown into the mix. When a comet travels through our solar system, the sun heats the comet causing some evaporation. The comet leaves behind a dust trail. When the earth's orbit travels through such a trail, the dust hits our atmosphere at a great speed causing it to burn up. Often, these meteor showers are recurrent and predictable to a certain degree.
The moon cooperates nicely this year for the Perseid Meteor shower. Although the moon is a fat waxing gibeous, it is far to the south and will set early enough to have several hours of good observing before the Sun rises. If the sky is clear and you are away from city lights, conditions should be ideal for observing. The darker the spot you can find the better. Also, make certain you have a clear view of (especially) the North-North Eastern sky.