Hi!
Welcome to BYC! You have gotten some sound advice on keeping chickens safe. There are some good articles on coop design on this site. Here's a link to some of them. Once you have an idea what you are going to build, I recommend starting a thread and getting feedback in the Coop & Run forum for feedback. And build twice as big as you think you need. Chicken math is real. 


Welcome to BYC! You have gotten some sound advice on keeping chickens safe. There are some good articles on coop design on this site. Here's a link to some of them. Once you have an idea what you are going to build, I recommend starting a thread and getting feedback in the Coop & Run forum for feedback. And build twice as big as you think you need. Chicken math is real. 


Best wishes and have lots of fun! 
Glad you decided to join us!