There is absolutely no validity to dry food being better for cats. If your friend mentions the old "dry food is better for teeth" argument, it's a myth with no scientific basis to back it up.Sheesh, all this info is overwhelming for a relatively inexperienced cat owner like me. I've got a friend who says dry food is best, and she's urging me to feed my kitten dry food. Then I see people on here saying wet food is essential, and others who are going the homecooked or raw route.
Is there a good FAQ or resource specifically for new owners of kittens? My primary concern is making sure my little guy gets the nutrients he needs as a kitten...then I can figure out what he needs as an adult when the time comes.
As for kittens, as long as they are not still nursing, their nutritional needs are not different from an adult. It's just that commercial kitten foods are usually better formulated in that they are higher in protein and fat and lower in carbs (all good things for all cats without health issues). As long as you are feeding an all stages or kitten food, and lots of it, you are filling their nutritional needs.
If you want to learn more about why many people are going the raw or home-cooked route, there is a lot of great information with links here: http://www.thecatsite.com/t/264154/raw-feeding-resources