Always go out with the pup, guide it to the same area each time and happily praise the pup as it eliminates. Whenever he can't be closely monitored, confine the pup to a small, safe room or dog crate. Physical punishment may actually slow down the house training process. Thoroughly clean up the soiled area with a product made especially for pet odors and stains. This is how they investigate their environment, get relief while teething, and entertain themselves.
All puppies chew.
A judicious amount of supervision or confinement will be necessary through the pup's first 9-12 months. Put everything out of reach that is dangerous, expensive, or irreplaceable. If you can't put it up, make it taste bad. Use hot or bitter tasting sprays to protect furniture, door molding, pillows, the stereo, electric wires, cabinets, etc. Buy a variety of safe rubber or nylon chew toys.