Greetings from Kansas, Ayman, and . Happy you joined us! A great place to start for the chicken beginner is the Learning Center here https://www.backyardchickens.com/atype/1/Learning_Center
This will get you off to a great start but feel free to ask questions along the way. Best wishes!
Welcome to Backyard chickens. BYC has over 400,000 members around the world, so a lot of folks are interested in chickens (and ducks, geese, quail, guineas, etc.