i'm new to raising chickens as well but have already learned many things:
1) buying from a local breeder is 5x cheaper than any hatchery or website. The only exception i would make to buy from a hatchery or website is if i wanted a specific breed.
2) craigslist is an absolutly amazing tool for everything

3) You can build a coop for much cheaper than everywhere trys to sell them for (as long as you want to put in the labor behind it).
4) don't listen to most people about bad breeds or roos(even though you said you werent getting one)...yes, certain breeds are known to be more aggressive but raised correctly i've never had a problem with a breed or rooster yet. I got day old chicks and picked them up everyday...yes everyday, and 5 months later i can still call and scoop them in my arms on command.
5) speaking of breeds, pick ones that work with your climate... for example, rhode island reds and barred rocks can stand both heat, extreme cold and are good egg layers.
6) Chickens will eat anything!!! Fruit, table scraps, etc...
7) Buy and set live traps because chickens will draw other preditors...this is not a maybe thing.
8) as such, i reccommend hard wire cloth because raccoons can chew though chicken wire.
9) brace yourself...my chcikens figured out how to use a cat door. Anything that they can get into, they will.
10) If you have the space let them free range, it will help your yard and you (less coop cleaning).
11) make sure you check out any local laws first concerning livestock/fowl...some areas have limits on amount of birds per acre or in proximety to your residence.
12) enjoy the experience. These clowns each have different personalities and will make you smile