As most of the other responses have said, I think what you're experiencing is totally normal. My daughter (12+ mo now) seemed to want to nurse constantly. I remember heading upstairs to put her to bed at 8 p.m. and I'd still be nursing at 3 a.m., in tears out of frustration and exhaustion. And honestly, after talking about it with my friends, I don't think I had it all that bad. The sleep/nap thing really doesn't work itself out for a few months (starts to improve around 6 weeks, gets better around 4 months, my daughter was on a "normal" schedule by 6 months - 2 naps a day and sleeping through the night).
Some tings that helped:
"Healthy Sleep Habits, Healthy Child" - not the most well written book in the world, but I found the info on sleep research helpful (how to get your baby to sleep well and how much sleep he/she needed and developmentally when to try what approaches).
Join a New Mom's support group. The hospital I gave birth at (Southern NH Med Ctr in Nashua) has one, but I imagine most hospitals do. You can all commiserate together and realize that what you're going through is probably normal. I met a ton of friends there, and learned about what community activities are going on for my daughter and me. Its been great.
Breastfeeding is hard for the first few weeks. Just keep it up. I remember at 3 weeks telling myself that I really wanted to give up (it was painful and time consuming and exhausting), but I will keep trying until 6 weeks before I decide. At 6 weeks, most of the issues had smoothed themselves out and I didn't want to give it up anymore. I kept going until she was 9 mo.
Good luck with your new son! Things get better every day.