I think with the pooping thing, his intentions are probably right. Dogs tend to walk a little when they're pooping. They kinda go forward as the turd is coming out (sorry). We potty outside, but we started with pads. I noticed that Chloe would start out standing on the pad, but as she started pooping, she ended up on the floor next to it.
Especially at only 10 weeks, you can't expect him to get it right, but it would be hard for them to understand the difference if he did it right next to the pad. I think that shows he's trying, but just can't coordinate where the turd falls LOL.
The biting IS totally normal puppy behavior, but that doesn't mean it is ok. Many books will tell you to yelp "ouch" when they bite, so it startles them out of doing it. That really did nothing with us, but I kept it up anyway. Some also say to turn away and ignore them when they bite. My Chloe (at that age) could have cared less if I ignored her--she was that independent!! LOL.
I swear we did all these things for a few weeks with no results. Then finally, one day, as Chloe was about to start mauling my son's foot, I took out a spray bottle of 50/50 water and vinegar. I did one squirt with a sharp "no!" I kid you not, it was like a total turn around--from only one squirt. She did not go for feet anymore, and then when I said no! when she was trying to _eat_ his fingers, she stopped as if thinking "beware the spray."
Now, what we do is whenever she nips (and it will continue for a while) we gently wrap our whole hand around her snout (like you would hold a pole) and get in her face real close and say a firm, but not loud or mean, "no bite...no bite"
This has been the most effective in curbing the biting. These days, she does occasionally nip when getting playful, but it is not very often, and we do still do the "no bite" move on her.
hth
Misty