Conratulations on startinf EASY with your LO!I remember going through much of the same "accidental parenting" issues you mentioned. I took time and patience, but it will come!
I might suggest that you start implementing EASY by setting an awake time and a bed time. The bed time is usually easiest, since you can say..ok bed at 7:30 etc. I began with a bed time routine-_I found that it was a great way to start. For example, bath @ 7, bottle, or bf afterwards, and then bed. The key of course, is not to allow your LO to fall asleep during the feed. So, if you find that feeding after the bath, before bed is leading to your LO falling asleep, then maybe feed, bath and then bed. Whichever works best for you and your LO.
Which leads to your question about BF to sleep---by allowing your LO to fall asleep
without feeding, you are helping DD to fall asleep independently(eventually). By feeding to sleep, your DD is thinking that they go together, so even when she wakes at night, she will not be able to go back to sleep without that. Pat/Shh or Pu/PD are the ways in which Tracy has set out to use to assist our LO's in getting to sleep. My DS is 10 months old, and we still do Pat/Shh when he needs it--he never adpated well to PU/PD--just screamed more.
I would also suggest taking a look at some of the sample routines for 6 mos, found on this same message boards--they are a great guidline, and can give you an outline as far as what you should be trying for. But you will adapt your own routine with your LO as far as times go etc. I do remember feeding my son a bottle at 7, and solids at 8 then bed at 8:30-8:45--but watching his cues to see when he was tired.
Mantra cry--I wish I had my book with me--I leant it to a friend though! It sounds different than a hunger cry, or an Im hurt cry...its the same thing over and over again. Maybe someone else can better explain that.....

HTH and WELCOME!