Welcome to our forum, and welcome to your new baby!
Great ideas below. I agree, shorter feedings with burps in between, even if you put him back on the breast after a good burp or too. The less air in his stomach and the less milk too, the less spit-up you'll deal with. Keep him vertical and don't nurse him to sleep when he's horizontal - he's got to burp. And I'm sure it makes you nuts to see all that good breast milk get wasted!
Do consider pumping for 2 reasons: you'll know how much you're producing when your breasts are really full, and you can consider freezing that milk so someone else can feed the baby while you nap.
Be sure he's really eating and not nursing/sucking just for comfort. A pacifier can help - my son really only used one once, but many babies do well with them. There are pros and cons, but if he calms down with one, you'll know he's not just hungry.
Also, try skin-to-skin contact with someone else, like Dad or Grandma/Grandpa - some babies like that feeling to calm down, and it doesn't mean they are hungry. What you want to avoid (and if you scan the prior questions on Mamapedia, you'll see dozens of questions around this), is a 9-month-old or an 18 month old who simply cannot be soothed or cannot fall asleep without nursing, or a 12 month (or 24 or 36 month) old who can't get through the night without eating! Someone else MUST be able to put a child to bed, and you want to develop a rocking/book/lullaby routine long before the child develops the habit of nursing to sleep. While a newborn must nurse on demand because they just don't have the capacity for a big meal, a child over 6 months of age doesn't need to eat every 3 hours during the night. Ask your doctor, but that's the most common cut-off. And at that age, they need to sleep at night (brain development) more than they need to eat.
I agree about La Leche League or a lactation consultant or a casual moms' group. You'll get great suggestions and support from those who have "been there"!