it can be very simple... most of what u read about will be only needed very rarely if ever... there have been free roaming flocks of chickens where all the owner does is throw out a few hand fulls of scratch every few days... no coop, very little feed, no medicines or diseases, no incubator, no brooder, and they did good in that flock for 20 years until the owner passed away...
When I had my ducklings, the more I read about them, the better I felt about raising them, they were very easy to me. But with chickens, the more I read about them the more involved it seems and the more nervous I am about them. There just seems to be so much to taking care of them...it's a little overwhelming! Hoping it feels less so in the actually doing.