Ah the old breast feeding mafia thing. Mrs ddmonkey tried very hard to make breast feeding work but after several weeks of tortue and constatnly hungry babies we got a breast pump and formula. I actually said that's it I can't take any more of this and went down to a 24 supermarket at 3am to buy the stuff, best decision ever. Don't flog a dead horse. My three top tips would be:
Don't feel guilty about it if breast feeding really doesn't work, it may do it may not, but either way express what you can and if you have to use a bottle do so and move on, its not the end of the world.
If your baby has great discomfort and crying after feeding and this perists then don't just accept "its colic nout you can do". Try a Lactose free formula and see if that helps. Our second was lactose intolerant and as soon as we moved him to lactose free formula he was a different baby.
Finally do work hard to establish a routine after the first few weeks, not in the horrible Gina Ford way but in a regular time for feeds and sleeps way. It will make life easier if you persist.
All the very best! Fatherhood is great and it gets better after the first 6 weeks, honest!