in a month or so i'm going to be living alone and would like a dog. i've sort of already decided on the breed (toy fox terrier) because they suit my situation: adapt well to living in a flat, not too needy, don't shed much etc. but i don't think i've spent more than ten minutes in my entire life with a dog.

how easy is it for a dog to get used to a person? is training really difficult? do dogs just take a dump indoors or do they know innately to keep it in until they are outside? could i buy/adopt or whatever the dog already trained or is it something the owner has to do? would it be awful of me to go to work, and leave the dog behind even though the breed is apparently quite independent?

thanks