This is a really good site too for any questions you have. http://kellymom.com/
I've used it a lot over the years.
Babies end up nursing (in the beginning) a lot more often than bottle feeding, especially when they're that little. Don't get too stressed about how much she's eating. If she stops eating and she seems content or falls asleep, it means she had enough. A lot of people try to wake the babies up after they fall asleep, but that just frustrates you and the baby. She will wake up again when she's hungry. That's what they're built for.
Your nipples are going to hurt like the 5 fires of hell for the first week or so. It's normal. It goes away and then you could probably run nails over your nipples. I'd go get some lanisoh lanolin cream. Put it on after every feeding until your nipples adjust.
What you're listening for when she eats is gulping. You'll know when she's drinking. It's pretty obvious. The opposite boob will feel like it has a cramp or your boob might get itchy (weird i know). That's when your milk let down is happening. That's basically when your boob shoots out milk like a hose. It doesn't happen instantly. It takes a minute or so for it to start. The baby might get a little impatient until that happens.
Don't be surprised if she wants to nurse a lot in the beginning until your body adjusts to what she needs. She will be going through a growth spurt soon if she hasn't already started that yet. It will mean that she might want to nurse a lot all day and all night. (like every 30 minutes or so) Totally normal.