Welcome to the forum. Glad you found us.
How to get started. That is a wide open question, there are so many different ways. Why do you want chickens? What purpose will they serve? Eggs, meat, to show, bug patrol, eye candy, a breeding project, pets, some combination of these, or maybe something totally different. Roughly, where are you located, rural, suburbia, which county or state (A real rough idea of your climate)? Do you want them to hatch and raise chicks themselves? How much room do you have? All these and more could have a bearing on my answer.
My suggestion is to read various posts and threads on here, whichever ones catch your interest. Spend some time in the Learning Center at the top of this page. Again, read things that catch your interest. Try to determine to yourself why you want chickens and learn a little bit about their housing and care.
Do you want to start with baby chicks or start withholder chickens? How many? What options are available to get chicks or chickens wherever you are?
It’s just hard to say much because there are so many different options and I don’t know your circumstances. But keeping chickens doesn’t have to be that hard if you can provide food, water, predator protection, and environmental protection.