Hi Elaine,
Congratulations on your new puppy. Have you read or purchased a book discussing the ownership of Whippets yet??? Library or book store might have something. It's a logical first step for me to think of :)
That might help you out a bit since there are some special considerations that have to be taken in training & raising a whippet. Not difficult, but helps to understand the breed better. Food, training, bedding, and other issues are also addressed just for your beautiful breed.
Also, I've seen beautiful cloth collars designed for the longer necks of adult whippets & greyhounds... a breed specific book might give better details than we could here just because of the space & time involved in writing.
good luck & have a wonderful time getting ready for your new baby
toodles