[KJohnson]

Luckily we didn't to worry about leaving Westin home for more than three hours by himself when we first brought him home from the airport(at just barely 8 weeks). When he was alone, however, he was in his crate or in a small area we had constructed for him. As for sleeping, our pup has a crate in our room where he sleeps and a crate in the living room that he can sleep in if he is too wound up when we are ready for bed (the crate has a small area around it so he can play and then lay down when he is ready). We've found that this works best because he can be a part of our bedtime routine either way. He gets 10 minutes of on-the-bed pats-time with mom and dad and then he either goes in his crate or in his area after that and the lights go out.
It's really all up to you and what you feel comfortable with.
Congrats on the new puppy, they are joys and terrors all rolled into one amazingly cute package! Take lots of pictures and share them!