If you're thinking about going vegan, you're gonna have to change a few things in your normal routine. I found it easier to eat and cook vegan, after I gave my fridge and cupboard a small make-over. When your kitchen is "vegan", it'll make things a lot more convenient when cooking. Who doesn't want cooking to be easy peasy?
Of course, your grocery list and kitchen-staples are gonna depend on your taste, location and which type of diet you prefer. But I found that most vegans have some foods in common, that they just cannot live without
Here's a list of the staple things, I always keep in my kitchen:
Fruits
Bananas
Frozen berries
Mangos
Dades
Apples
Dry goods
Rice
Lentils
Oats
Chia seeds
Goji berries
Cacao nibs
Veggies and legumes
Spinach
Romain lettuce
Black beans
Kidney beans
Chickpeas
Avocado
Cucumber
Tomatos
Lemons
Zucchini
Sweet potatoes
White potatoes
Corn (frozen)
Peas (frozen)
Wets
Plant-based milk (my favorite is rice milk)
Tahin
Orange juice
Peanut butter
So these things are just my basic foods - I eat them every single day and they fuel my body all week. Of course, I use so many other foods and spices for recipes and special occasions.
I would also recommend you to get a blender and a foodprocessor (a lot of vegans recipes requires these)