How to play tennis 
Find a place to play. 
You can play tennis at your local park, a gym, or a tennis club. Search online or ask friends where the best local courts are.

Most parks let you play for free, but you'll probably need to pay membership fees to play anywhere else. You can practice basic serving techniques in any large, open space, but it's best to spend as much time as possible on actual courts.

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walks up to pet the dog.

How to age red wine 
Identify the strain of grape in your wine to determine the proper length of aging. 
Red bordeaux : 5 to 20 years (fruity, oaky). Cabernet sauvignon : 5 to 15 years (mild to hearty).

Merlot : 2 to 8 years (mellow, compliant). Barolo : 5 to 10 years (thick, complex, flowery).

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is leading to a water ski station, then a woman slides on ramps in the water holding a water ski rope.