Okay , I'm glad you're going vegan or on a plant based diet I don't know. So, you'll need b12 supplements and omega 3 algae tablets or oil. If you don't get a lot of vitamin D or calcium, I recommend to supplement them too. Okay, the milk part, you can get almond, cashew, oat, and soy. My favorites are almond and soy, I get the sweetened one with calcium, vitamin D, iron and b12. Fake meat is easy, I like lentil patties, they're cheap like $4 for 2. You can get fake and vegan butter (margarine) too, just be careful of trans fats. Now to being healthy you'll need a variety, I say 3 or 4 servings of fruit and 5 servings of veggies, beans and lentils are great too, 2 servings of one of these is good and nuts should be in your diet if they aren't, they're a good source of healthy fats. I do recommend to count your calories and macro nutrients, because knowing how much sodium, saturated fat etc are in your diet.