While it may be true the people where you live aren't educated you obviously have a good grasp of how to use the internet. Any search about neutering would give you a wealth of information from vets about how much better it is to neuter or spay your pet as well as tons of arguments from people who think its better to "not tamper with nature". A quick call to whatever vet is closest would also get you this information. Most vets talk to you about when your animal should be "fixed" at their first puppy checkup if it hasn't already been done. I'm glad you're willing to take your dog's health into consideration.
Not getting it done can lead to cancers, behavior problems and other issues. Its normally done when the dog is still a puppy, although it can be done at any time. In the southern US they actually do something called pediatric neutering which is done as young as 6 weeks. My youngest was neutered at 9 weeks. Unfortunately it doesn't deter him from trying to mate with inanimate objects.
FAQ 
~Sue~ 
~Pablo 
~Lucia 
