You will need flea and tick control if the dogs is going to be outside on the ground anywhere that these little buggers are (different types of ticks are indigenous to certain areas but fleas are everywhere). Age of the dog doesn't make a difference (pretty much all veterinary approved topical treatments are safe after 8 weeks of age). I highly reccomend getting the product from your vet (not a store or online vender) so you are sure you're useing the most appropriate product for his size. I know that my specific back yard hasn't had any fleas for the past few years, but if I'm taking them for a walk in the woods or to visit my mother's house, they will pick up fleas and ticks if I don't have Frontline (that's just what I choose to use) on.
Nutrical, if your puppy is eating well you shouldn't need it (breeders on here can give you more details) but it's good to keep on hand. It's a high calorie, high glucose suppliment usually used for animals that are not eating well, usually due to illness, but it's commonly reccomended for toy breed puppies since they're so small their blood sugar level can drop rapidly if they aren't eating frequently enough. Hopefully someone with more experience will advise you on the nutrical, but you should ask your vet too about useing it for this purpose and if they have alot of experience with toy breed dogs.
Congrats on your new puppy
