RE: Burping. What Clod said. Yeah, you really gotta kind of Whomp 'em a bit harder than you'd expect. They are actually pretty tough, don't whale on 'em but pat 'em ant-killing strong.
And they are all different, as any parent who has lost their senses long enough to say "leave it in" will tell you, the second one is nothing like the first. I'd willing to believe that the same would be true for 3rd, 4th, 5th, etc. I don't need to find out.
Oh and to hell with everything else but sleep. Fuck cleaning and cooking. Stock up on frozen foods and such. Most people, not all, are in a state of shock for the first few months.
Good luck.
And Thanks for the vote of confidence Sundae