Pawz's analogy above is spot on. Please, please PLEASE do not wait to start socializing the dog. It could be a number of years before the dog "matures". Start taking him with you whenever you can prior to a camping trip to start exposing him to changes in environment and lots of people. Be consistent and firm in your training. If necessary find a good trainer and work with him/her. There's far more risk in NOT socializing the dog.
SIL breeds labs. She starts socializing her litters as soon as it is safe to do so. Her dogs go to their new homes so far ahead of their unsocialized "peers" it's amazing. Start now or be prepared for a potentially uncontrollable dog.
