Glad to meet you, Grace, and welcome to BYC. Take a deep breath. Slow down and read the instructions carefully, and read the answers on the other thread carefully, too. You and your chickens should be OK.
Welcome to the coop! I use the Forums and Articles tabs at the top of the page to do research. You can get lost for hours. It's nice to know you are minutes away from getting help with questions and emergencies! I always check in the "What's New" section as well at the top of this page. This way I can read how I may have a similar question or help give some advice.