I actually had a subscription for that in the early late 90's/early 2000's. It was actually full of good advice on pet care and interesting articles on breeds. Make no mistake though, it was originally intended for people involved in breeding and cat shows, not pet owners.
Now though you can find better/more detailed advice on dedicated websites and forums. I use these places mainly to scope out relatively inexpensive pet food with higher nutritional value and lower plant/grain content (cats are obligate carnivores. They do not have the digestive tract to handle foods like Purina or Hill's Science Diet, so the more plant material in the food, the harder it is for them to digest. A 40 dollar 11 pound bag of Nature's Variety Instinct will actually save you money in the long run. I've seen one of those bags feed three cats for over a month.)