I have to agree with Nick, you should learn from those that know alot more than you do with how to train a greyhound.
Honestly to be fair to the dog i wouldnt recommend purchasing a greyhound until you know how to look after it, train it and learn about racing in general such as how to nominate for a race how to transport the dog correctly etc before commiting and buying one.
Im going to stop a few arguments and close the thread.