All through my pregnancy I wanted to read everything I could get my hands on about being pregnant, what I should be experiencing, what was happening with the baby, etc. I realized once Reese was born that reading a lot of books on parenting was confusing. It seems there is a lot of conflicting information about a lot of topics. One that seems fairly uncomplicated is starting solid foods.
What I read and what my pediatrician recommended was to start somewhere between four and six months and watch for certain signs that she was ready.
It was really neat to actually see her show signs she was ready. Reese starting watching intently when we would eat. Then she would start reaching for our utensils. So we started her on rice cereal. She was really good about opening her mouth when the spoon came near. However, she spit out a lot of it. Even so, she certainly swallowed more than she spit out.

It was fun to hit that milestone and she's doing well with it. However, on the flip side she seems so big and grown up. She's changed so much in 6 months. I have some friends whose babies just turned a year old though and it's amazing how many more changes she'll go through in the next 6 months!