Stuart Silvester is a professional tennis coach and even "double-egged" Tim Henman when he was at school! That means he beat him 6-0 6-0.
He's taken time out of his busy schedule to give CBBC Newsround's website 10 top tennis tips.
Getting a racquet
There are loads to choose from. You can get a kid's racquet for about £10. It's important that you get a racquet to match your hand and body size. Ask for advice from the sales assistant.
Make sure you warm up before you play. Jog around the court a few times and do some stretches - focusing on your arms and legs.
Do some co-ordination exercises. Try bouncing the ball on your racquet, or against the floor. Walk around with the ball on your racquet.
Now you're ready to play! Make sure you turn sideways when receiving shots - then you can move your hips to do both forehands and backhands.
Hitting the ball
Aim to hit the ball at waist height. Once the ball has bounced, it's easier to hit the ball when it's falling - that's when it's going down after it's reached the highest point in the air.
The action of the serve is the same as doing an overarm throw - it's just that you've got a racquet instead of ball! When throwing the ball up for a serve, keep your arm straight. Keep pointing at the ball once you've released it.
Tennis players need to move around the court quickly. Skipping with a rope can improve your footwork and co-ordination. Also try hopping across the lines on the court.
Make sure you drink plenty of water when you're playing - especially in warm weather. If you're feeling peckish, eat a banana or an orange.
Do a warm-down at the end of your tennis session. Jog slowly around the court and finish off with some stretches.
Remember! You don't need a tennis court or even a racquet to practise your tennis. Practise your serve action by throwing a ball and strengthen your arms by swinging a frying pan.
I thought it was a joke when someone told me to do that - but it helps your balance and co-ordination!
Just make sure there's nothing or no one in the way!