Starting with the grip:\nYou probably want to use a 'Semi-Western' or a 'Western' forehand grip. Essentially you want to hold the racquet as you would a frying pan, making sure you grip it at the very bottom of the grip.\n\nThe swing:\nTo start you racket head wants to be back and lower than where you want to make contact with the ball, keep your arm reasonably close to your side.\nContact with the ball is the most imporant part of the swing, the 'contact point' wants to be in front of your body, idealy at around net height, your racket heads wants to be pressing forwards and up.\nTo finnish the shot you want to keep your eyes on where you made contact with the ball, your racket head finnishes up high over your shoulder and your hips and shoulders should be 'squared' to the net.\n\nTo really learn a top spin forehand you want to get on a tennis court with someone that can either teach you, or knows how to hit one and you can watch their technique.\n\nPlayers like Rafael Nadal hit with alot of topspin so I would recommend you watch him play on TV if you have the chance, and Roger Federer is awesome and everyone can try and learn from him.