K.J.
I breastfed my girls. I think I started with rice cereal, which they didn't like much and moved to oatmeal soon after. If you have pumped milk, you can use that to mix with it. Otherwise, you could get a tub of formula (as small a one as you can get) to use to mix with the cereal. You mix the same amount of breastmilk in as you would formula. Exactly how much depends on the consistency you want. As for the veggies and fruit, just get a bunch of different kinds and see which ones he likes. I never mixed the veggies or fruit with milk or formula at all. I suppose you can if you like, though. It's not necessary, though.