My little guy is 4 and half months old. He normally waked up between 6 and 7 a.m., and be awake for about 2 hours before napping for a short time: usually 30-45 minutes. Then he takes a long nap sometime between 12 and 1, and is out for about 2 hours. Normally, he puts himself to sleep, though he sometimes needs a little help (today, for example!). So I wear him for a little while, then rub his back in the bassinet. At night, he goes down at 8ish, then waked up a few hours later for a feeding. After that, he mostly sleeps the rest of the night.
I put him to sleep on his back, but inevitably he finds his way to his belly to sleep, and seems to do better that way. We recently phased out of co-sleeping, and now he sleeps in a co-sleeper bassinet next to my bed. He seems to be doing really well with that transition, and he seems to really need his space when he's sleeping: he moves and squirms and will crawl a bit in the bassinet.