Much of the data is here
This year, the Perseids will be visible from the northern hemisphere between 11 and 14 August.
If the clouds cooperate and the skies are clear this weekend, the prime times to watch are generally between midnight and 3am. This year the night of the 12th going into the 13th is expected to be the best. But meteor showers are extremely variable and if you have the chance, watch in the early hours of any morning between the 11th and 14th.
The direction in which to look is the east. If you know your constellations, find Perseus then look at its surroundings. Take a deck chair, blankets and a hot thermos to keep you company. Even in August, you will need the last two. Then wait. The expected rate of meteors this year is a few dozen per hour.
_http://www.guardian.co.uk/science/across-the-universe/2012/aug/10/perseid-meteor-shower-astronomy
and
_http://earthsky.org/tonight/more-perseid-meteors-plus-moon-and-venus
I don't normally make a special late night out to view meteors as they are a freak of nature and unpredictable. But if I'm on the roof working on other shenigans, I'll take a larger flask of something and keep my eye out for them.