First things first: make sure your baby chicks have everything they'll need on the first day home. As they get older, you will use different feeders, but for the first week or two, plastic chick feeders like the ones you see above will make life a lot easier for you. Chicks love to stomp in their feed, tip it over, and generally make a mess. They're also not terribly smart and can eat quite a lot of shavings or bedding while they pick spilled feed off the floor. These feeders are perfect - the chicks can see the feed clearly because they're attracted to the color red, they can't tip them, they can't roost on them (and therefore poop in them), and they're at the right height when placed on the brooder floor.
You'll also need: waterers, bedding, a brooder including a heat lamp, and special chick feed. See this handy checklist with more details: