First off, you need a pigeon of course! The best place is to look for pigeons that are for sale, then go ahead and buy one (or some) from a certified pigeon breeder, to buy young birds.
If you want to buy winning pigeons already, that may a great start as well. make sure you find out how old the bird is first, before the purchase is made.You should also verify that the owner has won races before you buy it.
Also, you may hear something that is known as “eye sign” but this doesn’t necessarily mean that the pigeon is a good racer, so don’t base everything on that item alone.
Probably the best way to learn about the sport is pick up a pigeon racing guide.