Hello there! Welcome to YorkieTalk. Fred is wee-wee pad trained as well. If you do a search (there is a button on the top dark-blue navigation bar) on "potty training" or visit the Training section of the board, you could probably find a lot of helpful tips. (
https://www.yorkietalk.com/forums/general-training-questions/)
As far as the poo-eating, there are very many threads on that as well.
A solution for it is to maybe get them a certain pill that keeps them from eating their own feces. You can check out this link:
http://www.petedge.com/shopping/prod...uctID=186&AS=1
I am sure there are a lot of other solutions. If you browse around, I am sure you'll find plenty of answers to all your questions!
I hope that helped!!