From the cup, it can be drunk from 6 months old (if you hold it), much more controlled than with a bottle.
The bowl is perfect for first meals (it is quite small - like a saucer), but also for serving snacks afterwards.
The plate as well. It is of good quality and is cost-effective because it will last for many years. The silicone can be used in the oven for warming and in the microwave.