My daughter stopped eating breastmilk at 6 months. Not because she wasn't offered the boob but because she flat out refused it. (My wife was quite in distress at this time, I can't imagine how it must feel to have your nurture so rejected.)
Afterwards it was just food. Not that her stomach could actually digest it properly so it was a trying time. As I do the cooking at home and I'm pretty adamant on organic food made from the best sources she's been a real fine diner since day one. Only on one occasion has she been offered baby food, she took one bite and cried for an hour nonstop (I would too so I don't fault her.)
In the beginning it was mostly the really clear flavours that made an impression. Olives, halloumi, permesan, steam boiled vegetables (broccoli, carrots, peas, etc). Then we moved on to things she could grab herself, like the Swedish dish pyttipanna (diced potatoes and meat), diced sausages (falukorv, chorizo, blood sausage) and tortellini. Now she eats just about anything. On the whole I'd suggest starting with clear salty, sweet, umami, bitter and sour stuff to find out what the kid likes and then go from there.