wow! congratulations on the new pup! you're in the right place to find out about yorkies! i found this site so very helpful with my tucker
a lot of what i did, though, came from trial and error. i think everyone's situation is different and you have to do what works for you and your pup. you live in an apartment and i live in the country, so what works for me might not work for you.
i will say that it gets better as they get older
some things i think they just outgrow. tucker is almost 6 months now, and we've both learned a lot! i can't imagine life without him!
my advice is to use the info here as a guideline and use what works.
good luck with your new puppy! oh, and take lots of pictures!!! keep us updated!