It’s too late for you but my normal suggestion is to start small. There is a learning curve so go through that process before you decide to expand. It’s the same advice I give on the sister gardening forum. Start small and build up instead of planting a huge garden where you are going to burn out from frustration. Some people can handle it, I wish you luck, but a lot of people get overwhelmed.
There is a lot of contradictory information. There are different reasons for that. Part of it is that we are all unique. We have so many different goals, set-ups, climates, management techniques, flock make-ups, experience levels, and so many other things that different things work for different people. A lot of different things can work. Some people have problems understanding that there can be many different ways to achieve what we want. It is not that there is only one way and every other way is wrong. There is the experience factor. Some people see certain behaviors and want to call out the National Guard to restore order when it’s really just normal chicken behavior. It’s not a reason to panic.
A lot of people starting out don’t really understand why they see what they see. They see adolescent pullet and cockerel behavior and think adult chickens act that way. They don’t. Or they believe these magic numbers they see all over this forum and wind up overcrowding their chickens, which leads to behavioral problems. Hey, 3.9 square feet per chicken is a guaranteed disaster but 4.0 square feet is paradise, right? There is magic in 4.0. In some cases you can get by with less than 4.0. In some cases you need more, sometimes a lot more.
I think one of the hardest things for people just starting out to do is to understand that someone who keeps large free ranging flocks with multiple roosters may not be the best model to follow if you have four hens in a small suburban back yard. You have to take what people say and figure out if it actually applies to you.
Good luck!