Not sure whether you will try to BF, but if you do, I read somewhere that for the first few days/weeks you should get your other half to take care of EVERYTHING else and just let you concentrate on getting feeding working! I.e. shopping, cooking, nappies, handling visitors etc can all be done by him - even passing the baby to you for night feeds so you don't have to get up (I had a section so sitting up in bed was quite sore so my DH had to get baby out of the moses basket for me at night!).
Everyone will tell you to "sleep when the baby sleeps" i.e. have naps during the day, that's good advice if you are someone who can nap in the day, but if you aren't (like me), do whatever relaxes you instead while he sleeps - reading, a bath, or just listening to music with eyes shut, whatever! - don't let people nag you into bed if you know it will make you feel worse.
Enjoy letting baby sleep in your arms some of the time, eventually he/she will have to learn to sleep in a cot but it's a lovely feeling holding them!
DON'T beat yourself up if you can't figure out what's wrong when baby cries, it's totally normal to feel clueless about what's wrong - try the usual suspects (needing feeding/something to suck, checking nappy, cuddling, helping them to sleep, checking for irritations -too hot/cold/noisy/bright light/itchy labels/being passed around too much...) and they're still crying, then it may just be colic which is not your fault and you just have to get through it as best you can.
Do what suits YOUR personality (like the nap thing above). Eg after my section I went out the day after getting out of hospital to meet some other friends with new babies - some people would say that was crazy but as the midwife told me, "if that's what makes you feel better, do it!" and it made such a difference to me. But if you're the sort of person who needs to shut out the rest of the world for a few days instead, do that!
Hope that helps and wishing you all the best for your new little one!