in my opinion, home prepared diets are the best way to feed a dog, regardless if you decide on cooked, raw or a combination of both.
you don't need to be a scientist to figure out a meal plan for your dog, but there are some things you need to be aware of or you can do a lot of damage.
one of the more critical things is a proper calcium-phosphorus ratio of the diet, because dogs have a much higher calcium requirement than for example humans, and you need to balance out excess phosphorus in the food with a calcium supplement.
not every meal has to be "balanced", that's just something the pet food manufacturers want you to think. you don't eat a perfectly balanced meal yourself 3 times a day either.
if the required nutrients balance out over the time span of about 2 weeks, that's fine.
until you learn more about nutrition and feel comfortable formulating meals yourself, i strongly recommend you buy a few good books and follow tried and proven recipes.
3 of my favorite books are the following:
* dr. pitcairn's "complete guide to natural health for dogs and cats" (raw & cooked recipes)
* kymythy schulze's "natural nutrition for dogs & cats" (raw diet, i don't agree with all of her statements tho)
* monica segal's "k9 kitchen your dog's diet: the truth behind the hype" (also raw & cooked recipes, in my opinion one of the absolute best books on the market)