You’ll need a racquet with its own case. For a beginner, all you really need to do is check to make sure your hand fits comfortably around the handle. The racquet shouldn't feel like it's too heavy to move, but it also shouldn't feel like it weighs nothing. There are also men's and women's racquets, but you should prioritize fit over gender in most cases.
Ego/fear=childISH and constrictive. Playful is ChildLIKE allows freedom from ego which results in ease and natural power. The adult self can choose when to let go. When and where it is safe. A tennis court is a safe universe with lines and rules. Those rules allow play without anxiety. Embrace the parameters and have fun. You’ve already won the hardest part and it works! (OK..I still swear my arse off, in a garbled language somewhere between a Glasgow dockyard and Babylon when I miss, but that’s fun too).
Begin with the grip. The most common grip in tennis is the eastern forehand; the eastern forehand grip is also the best choice as you learn to play tennis. Use it for your forehand drive and the majority of your shots. Place your hand flat on the racket strings, and then slide your hand down to the handle. Wrap your fingers around the racket. Your first finger should be forward slightly as if you were holding the trigger of a gun. Keep all tensions out of your fingers. The eastern forehand grip is often called the “shake hands” grip by those who have just begun to learn to play tennis, because, in essence, you are shaking hands with the racket. For most people, it is the preferred grip for serving — particularly, when you first learn to play tennis.
I accept your thesis — kids & adults learn tennis differently. But there’s a corrolary: As someone who began tennis 10 yerars ago as a retirement activity, I’m confronted by others in my over-70 age group who — I swear — began hitting tennis balls before they could walk. There’s no way I can catch up with them. Should I give up, & just play with others “at my level”? [This is a serious question.] Or should I attempt one-person drills with the aim of improving?
Simply put, kids combine the technical analytical instruction with their desire to be comfortable (which is nothing else than the body’s signal of telling you what is a natural way of generating force), while adults do everything in their power to perform the movement “correctly,” even when it doesn’t feel comfortable and it doesn’t produce any natural force.
Learn the basics of tennis scoring. One player serves the ball per game. From the time the ball is served, one point is available to either player. The point is awarded when the ball goes out of bounds, hits the net, or is missed by a player. The game ends after one player has scored four points with a margin of at least two points over the loser. For example, a score of 4 - 2 means that the game is over, but a score of 4 - 3 means that the game must continue.
Further, the patenting of the first lawn mower in 1830, in Britain, is strongly believed to have been the catalyst, worldwide, for the preparation of modern-style grass courts, sporting ovals, playing fields, pitches, greens, etc. This in turn led to the codification of modern rules for many sports, including lawn tennis, most football codes, lawn bowls and others.