barking help

I have an active, well-behaved three year old springer spaniel. Almost daily for the past year, I take him in my SUV to a local coffee shop with me, which he loves to do. He's always sat quietly in the vehicle while I go in to get coffee. He knows the routine well. Can see me inside the store...

I was gonna google something like, "How to stop a dog from barking." However when I googled puppy training ebooks for my Kindle I came across a terrible book by a guy who breeds German Shepherds that was a Puppy Q & A. One of the techniques he said to do to stop a puppy from biting had me...