Just got a new pup 12-13 weeks old. Doing fine apart from toilet training.  Tried sprays/cleaning nappies but still cant get him to go into yard. He cannot go outside of the yard until 3 weeks time after his final injection.  Any advise please and also is there any books on these dogs that I can purchase.  He is also on beta complete puppy food which the breeder had him on but is always looking for other food.  Can I give him any extras and can he have any chew sticks yet?
Any tips would be gratefully received. We have had other dogs in the past but have had no trouble toilet training them.
Thanks