(1) Are you new to chickens / when did you first get chickens?
My first chickens were given to me by my Aunt back in '07. She gave me 12 hens and a rooster because she was "tired of fooling with them". Although none of that flock is left, I've kept chickens ever since.
(2) How many chickens...
Congrats on the new family member! :D I'll just jump right in with some advice. She sounds like she really needs some TLC. Start off by getting some good laying pellets/crumble. It contains protein and should harden up her egg shells (I'm guessing as I'm no scientist). Best way to keep her from...