Admit it, socializing both yourself and your dog is a pretty tough task. But with the right amount of patience and care, anything is possible.
It is advised that dogs should begin learning how to behave around other dogs at a very young age. Puppies between the age of 2 months to 24 months are said to be the most receptive. However this doesn't mean that older dogs shouldn't be subjected to any form of social activity. Though it is a lot more time consuming, when done right your dog will have tons of cute new friends! 
 
To begin Socializing your dog,
1. TAKE HIM OUT FOR A WALK EVERYDAY
It is mandatory to subject your dog to exercise every single day by taking him out for a walk. A walk is more like a play time for your dog. During this process your dog might face other dogs or animals. In this way, taking your dog out for a walk will give him new experiences and enhance his socializing skills.

2. MAKE SURE YOU HARNESS YOUR DOG AND A MUZZLE ON HIM
The first few experiences of socializing may or may not go the right way. The first time your dog comes face to face with another dog or animal, it might tend to make him nervous and aggressive. In order to avoid the risk of your dog indulging himself in a fight, it is always recommended that he is harnessed and muzzled until he becomes comfortable socializing.

3. TREAT HIM
Let your dog associate the act of socializing as a  positive behavior. Feed your dog his favorite treats immediately after. In this way, it encourages your dog to interact more with other animals.

The pros of socializing your dog are,
-> The most common method of socializing your dog is by taking him for a walk. By this way not only does your dog get a chance to meet other animals, he also exercises at the same time which in turn will keep him healthy.
-> Socializing will help your dog release all the pent up stress.
-> It will help make him more obedient and disciplined.

And as a add on, by socializing your dog might also get to meet the luuurve of his life and so might you!

Happy socializing!