Here are some great recipes for beginners:
What I would recommend is to purchase a bag of mixed frozen berries, mangos, and a small container of spring leafy greens. You may also have a couple of seeds and nuts such as flax seeds and almonds. Then you can start with almond milk or coconut water.
This way you can use the berries or mangos with your spring mix then add in either your flax seed or almonds. This can give you about 6 combinations. Dry either with water or coconut water for different taste profile as well.