First I can get my dog to go to a spot and lay down (briefly) but he won't sleep. How do I make him sleep?
Second he barks too much. I'd like to cut down or if I must eliminate barking but keep the rest of the sounds he makes.
I haven't started reading about scripts yet so I hope one isn't needed.

Ask your local veterinarian. Not sure what you mean about scripts.

About the barking: There are a couple of dogs in the palace in Markarth that don't seem to bark their heads off, but they do bark some. Perhaps their bark script or trigger is different than other dogs.

Woof! will be - I THINK - one of two things ... Either it will be one of the "Random Dialogues" that the dog has (At least it doesn't complain about arrows in its knees) as part of its "Follower Dialogue" ... Or just as a Dog. Woof! is most of the words a dog knows

You can search for all dialogue applicable to a "character", which is sometimes helpful in finding all of the litttle bits and pieces.

(there's a tab for these mini-dialogues, in a quest, but I can't remember what the tab is called!!?)