I am exactly in the same boar, had my first Lurcher 43 years ago, and have contacted Penny a few times, regarding feeding, Retrieving ect, all her pms to me have been spot on, given excellent advice, and always quickly,
I use her book a lot, diving in and out, a book that does not gather dust on your book-shelve, certainly appears to know her stuff, regarding injuries, and feeding. and as the first post states, you are never too old to learn.