A.R.
I think it really depends on the baby. With my first daughter, she was grabbing for food at 4 months and feeding herself with a spoon by 5. By her first birthday, she was toothless and yet eating just about everything (table food, baby foods, etc)
With my youngest, who is now 13 months, she only started eating at all when she was 11 months. She would spit baby pureed food out, won't hold a spoon, and is only interested in non-mushy foods that she puts into her own mouth. Basically, I nurse her throughout the day as she needs/wants, and give her a sippy with water or rice milk if she seems thirsty and with meals. She eats 2 meals a day and has tiny bits of apple, bread, green beans, noodles or rice.
With my first daughter, I gave her soy milk, but now have heard things about the psuedo-estrogens that scare me. I'm totally against cow's milk for so many reasons, so I can't really advise you on that part.
-M.