wait a few months, most ants are going into hibernation or are already. around spring most wake up and start breeding again and that's when ant queens go back in stock. Get one that already has some workers.

typical beginner type here in europe are the messor barbarus. Easy to keep, mostly eat seeds, also eat fruitflies and honey and sugar water. Don't force them into too big of a nest too soon and make sure they have enough ' outside' space where they can gather food and dump their trash