Like someone else already said, you should definitely do some reading. But if they're under 24hr light, then they're vegging now, so you'll have to decide when you want to flower them. To do that, you'll be changing the light cycle to 12/12. It's hard to see, but if that growbox in your pic is all the space you have, keep that in mind because you should expect the plants to double, maybe even triple in size once they go into flowering.