Some advice for that first time chick order, and apologies if you know this already:
Visit your local post office tomorrow morning, in person, and give them your phone numbers, and ask to be called IMMEDIATELY at any hour when the chicks arrive. Then leap out of bed and drive to get them! Have your brooder all set up beforehand, water in waterer, feed there, heat lamp or brooder plate up and running. Pictures here?
Buying feed, it's very important to check the mill date on each bag, and only buy within one month of milling, and use it up within another month. DO NOT buy older feed and expect it to be fine!
Have a hardware cloth cover for your brooder, to keep pets out, and chicks in. They will clear 24" in no time!
Post pictures! We all like to drool over baby chicks!
Mary