I was able to successfully BF after an emergency c-section; my son was born 8 weeks early and was in the NICU for a month. We had every breastfeeding complication imaginable- he was started on bottles so had nipple confusion, I had flat nipples, he developed breastfeeding apnea, I had low supply and then oversupply, clogged ducts, mastitis... you name it, we probably experienced it.
A nipple shield helped with a lot of our early problems. Cosleeping was a HUGE help. My midwife and lactation consultant were huge sources of support.
I did notice that nursing made my c/s scar hurt like a SOB. It was pretty yucky but then felt better after awhile.
There's definitely some things to research about nursing after a c/s- if I recall, there's some information about in The Womanly Art of Breastfeeding (La Leche League).
A doula is a WONDERFUL idea, as is choosing a lactation consultant ahead of time. Also joining and participating in La Leche league is a good idea too.
When you have your c/s, get up and get moving as soon as you possibly can, even if it hurts. As soon as they say you can move, get out of bed and walk. You'll be better off for it later. Because of my condition (preeclampsia and HELLP with postpartum reemergence), I had to lay flat on my back for three days after my c/s, which caused adhesions to form and awful pain for over a year afterward. If I would have been allowed to get up, I could have probably avoided that.
My c/s experience sucked because it was an emergency and I was really, really sick. I experienced a lot of bruising from the spinal and had back pain for over a year. But mostly everyone I know (except me, lol!) had pretty positive experiences with their c/s and nursing afterward. One of my friends was running just 6 weeks later.
Best of luck!