You'll find lots of info in the Learning Centre - https://www.backyardchickens.com/atype/1/Learning_Center and if you have a specific topic in mind, just type it in the search box - there's a wealth of information on past and present threads.
Ken has given you some great starting points so I will just send best wishes to you and your flock when they arrive.
I hope you enjoy being a BYC member. There are lots of friendly and very helpful folks here so not only is it overflowing with useful information it is also a great place to make friends and have some fun. Unlike non chicken loving friends, family and colleagues, BYC’ers never tire of stories or pictures that feature our feathered and non feathered friends