i started at 4 months. i started walking it at 3 months then started running it at 4 months depends really if its big bownd start at 4 months if you get a good bread start when ever
i would say a greyhound/wippett but its your dog mate when you get a good working dog its probably of luke the dog is always the best when you just choose any lurcher wippett or greyhound.
treat him well with lots of walks and he will be the best dog you will ever have try and teach him how tostay of the lead before 2 months hope you have luke with it ps bring him out with other dogs first