The thing about keeping chickens is that they are SO easy to keep! I got my first flock when I was 19 and about 5 months after, I went away to college. My father - who didn't have much experience in keeping anything - looked after my hens with ease! As long as there is available food and water, the birds pretty much go on cruise control.
I usually checked on the birds 3-4 times a day when I was home, but that was more for my sanity than theirs. Chickens are hardy and much more adept to caring for themselves than people get credit for. In comparison, a dog is SO much work. Dogs require a lot of attention and veterinary expenses. While they are man's best friend, they are probably the closest commitment to having a kid, and you really have to plan your schedule around them (can't leave the house all day if you have a dog!).
Read a few articles, talk to a local Backyard Chicken keeper, and have faith! Anybody can keep chickens, and the more work you put into your coop/birds, the better off they'll be. As of care though, they are not an animal that needs constant looking after, so you'll maintain your freedoms without worry!
Hope this helps!