Hello and welcome to YT!!!
How many hours a day will you be gone each day of the week?? If you are gone more hours than you are home, then I don't think it would be fair to get a yorkie. There are alot of working people here at YT and they dedicate their time home to their yorkies. Yorkies do require special training and can be harder to train then alot of breeds. Are you prepared to do the training and stick with it?? If you get a laid back one, or one who is calmer I don't think you will have a problem with barking.
At this point in time you would have to get an adult yorkie rather than a puppy because a puppy requires more time and care and can get hypoglocemia very easy at that age and if you are not home and they have one of these spells they could very well die.
Also, if you don't have a job how are you going to take care of the yorkie's needs such as grooming,vet costs, preventatives,food,toys,etc.
I don't know your situation, so I can't tell you whether or not to get a yorkie. Only you know your situation and what is best, so take a few minutes to evaluate your schedule and time and all the other things that were mentioned, and THEN decide whether getting a yorkie would work out for you. I can tell you though, that yorkies are a joy to have and bring alot of love and laughter to our lives. Good luck with your decision!!!