Well for a start I strongly suggest you get insurance because it is unfair for your dog to suffer because you don't have the money. And make sure its one that covers lifetime, because some of the more commercial only insure up to a certain age.

If you're sure he is safe and won't he wont have a go if you hurt him, try using some (weak) salt water twice a day and if their are any signs of infection you need to get him to a vet asap, otherwise dogs tend to heal pretty fast

(Don't take this as given, its just what I've picked up from having dogs and from the vets etc)