Before I got my Huey, I bought. "Yorkies for dummies" & Your Yorkshire Terrier's Life: Your Complete Guide to Raising Your Pet from Puppy to Companion , & Yourshire terriers, your happy, healthy pet. These books were full of useful information and I highly recommend getting a book or 2 and reading"the instructions" before bringing your puppy home. As great as those books are, I have learned so much more on this website and wish I had known about YT before I got Huey. I recommend just reading. Training questions, sick and injured and even the breeders forum. Full of good info.
Good luck with getting your new furbaby, puppy or rescue. As for being home all the time, once they are past the little puppy stage, it isn't mandatory, but I know mine is much happier if he has one of his people with him at all times. He gets sad if left alone too long. We have even stopped boarding him for any reason and now must find vacation slots where we can take him along.