Wow, good info on this thread! I think I will bookmark that site too, thanks! I have always switched back and forth from the breast to the bottle and I never paid much attention to when I began introducing the bottle--just gave the bottle whenever I first needed to. I'm pretty active and I go to school full time, and just really enjoy my independence so I was glad that my babies never had any issue or confusion switching back and forth between breast and bottle. I produce quite a bit of milk so I would try to pump one side each time I fed the baby (at least for the first couple of months) so that I had plenty of milk in the deep freezer.
I hope breastfeeding or bottlefeeding or both goes well for all of us!