K.J.
I waited until 6 months with all 3 of my kids. That's what their doctors recommended. (They all had different doctors for their first years because we moved in between each child.) My sister-in-law, however, started all 3 of her kids between 3-4 months. I can tell you, from watching her, that those first couple months were pretty much a waste of a time. Her little ones weren't ready to eat from a spoon, it was far too early. She usually ended up with most of the cereal on the baby or her. It didn't become actual eating until around 5-6 months. She should have waited until then like I did. :-)