The baby lounge at Schiphol is amazing. There are small sitting spaces and cots in individual curtained off pods. Also a kitchen area to warm up milk or food. Brilliant.
Regular buses and taxis from Schiphol to Amsterdam city can be picked up from in front of Schiphol Plaza. The railway station is located in the terminal central hall underneath Schiphol Plaza.
If you're totally pissed off and frustrated trying to get behind the gates, instant relief can be found by awarding the service a big fat 1 at the voting machine. Payback: it helps a little :-)
If you don't have bags to check, go around the big mess of lines directly to the passport checkpoint. And there's no waiting in security lines since security checks are done at each gate.
If you get stranded miss your flight, join and do not leave the queue for the transfer desk, no matter how many helpful numbers they give you! Call, but do not leave the queue. From Experience.