socializing my puppy

Question
i have a very large family and i take my 13 week old male gsd with me every where since i have had him so he is meeting many new ppl. he doesnt seem to have a problem with ppl but around other dogs he seems overly aggressive and barks and growls and them not in a playful manner at all. i know that he needs to be around them and get socialized at a young age in order to break this habit but what would be the best way at going about this. how should i introduce him to dogs and what should i do when he does show aggression

Answer
One of the things you need to do is to give him strong leadership.  The key to most behavior problems is approaching things using the dog's natural instincts. Dogs see all the people and dogs in the household as a pack with each having their own rank in the pack and a top dog. Life is much easier if the 2 legged pack members outrank the 4 legged ones. You can learn to play the role of top dog by reading some books or going to a good obedience class. A good obedience class or book is about you being top dog, not about rewarding standard commands with a treat. Start at http://www.dogsbestfriend.com/ For more on being top dog, see http://www.dogbreedinfo.com./topdogrules.htm  If you are in charge, then the other dogs are your problem, not his.  He doesn't need to defend you from them.

Be very careful of other dogs over the next few months.  Even if you are getting shots, there will be a window where he is vulnerable to parvo and other diseases.  Try to find other dogs you know are getting their shots for him to play with.