Tactics

Any aspiring “tennis” player can do with a “tennis tip” or two to improve his game and style. The first “tennis tip” given by any coach would be to maintain your confidence even after a string of errors on court. Many a recreational “tennis” player should learn to hit at usual pace even when things don’t seem to be going right on court.
Any coach would give a learner pointers and “tennis tip”on placing or positioning of a shot in the opponents court. Whether to hit crosscourt or close to the net is a matter of judgment that every “tennis” player has to master over a period of time.
You will find many a “tennis tip” on serves. Most people rate a serve as the most important stroke in a game. A strong serve is definitely an asset to any player, be it a recreational or professional player. A strong serve is not always the most effective serve. Take a “tennis tip” on serve from Roger Federer. He hits a hard serve but uses it to best effect by placing it in different parts of the service box. Any “tennis tip” would be incomplete without a guide to maintaining good health. Drink a lots of water or low-calorie fruits that hydrate the body.

Suitable for upper intermediate through advanced players:

• Hit a high, deep topspin, preferably to your opponent's backhand side, that will kick above her shoulders. Most players can't generate much pace on a “ball” above their shoulders on the backhand side, so you'll usually get a high, floating “ball” that's easy to put away at the net. When you’re shot kicks especially high, your opponent will be looking up and to the side as she hits the “ball”, so she often won't see you moving in to volley. With this "sneak volley”, you can catch your opponent sending what would have been a fairly safe shot (if you had stayed back) but is, instead, a perfect setup for your volley.
• Hit to your opponent's "side pocket", the outside corner of the service box, then put the next “ball” away to the opposite side or, as your opponent hurries back toward the center of the court, hit behind him (wrong-footing him). This is a classic shot combination that can be started with a slice serve, a sharp crosscourt topspin groundstroke, or a delicately angled slice groundstroke, usually a backhand. One hazard though: if your opponent gets to your widely angled shot in time to set up a good reply, he'll be able to create an even sharper angle than you did, because of his wide position on the court.
• The drop-shot-then-lob combination is always fun, but it takes considerable finesse to execute safely. If your drop shot is too deep or your lob too short, most opponents will easily take the point, but you'll find some otherwise solid players who have a lot more trouble putting away short “balls” and/or overheads than they should. When you practice drop shots, try to get them to bounce at least three times inside the service line of your opponent's court. A good lob should land no more than four feet from your opponent's baseline, and against some taller opponents, your margin might shrink to less than three feet.
• If you want to try a combination shot your opponent might not have seen often or at all, the sidespin backhand approach shot should be fun. Hit a backhand combination of sidespin and backspin as you start toward the net. Usually, your opponent won't be able to resist trying to see what you're doing as you're coming in. With some of his attention diverted from the “ball”, he won't be quite ready for its sideways skid, and he'll hit off center if at all, giving you either an easy volley or no need to volley.

(http://tennis.about.com/cs/yourgame/a/shotcombination.htm)