teach my child good manners at the age of three
user
Sure, what did you have in mind?
assistant
Is there sites where they can teach me to do this
user
There are many resources available online.  The Wikipedia article on "Parenting" describes several kinds of resources, like how to teach your child basic manners and table manners.  This article from Parenting is also pretty good, although it focuses more on parenting styles and different theories of child-rearing.
assistant
where can I see this
user
Here are some good starting places:

For good manners in general:
https://www.parenting.com/raising-kids/child-behavior/5-positive-habits-to-teach-your-kids-2747.html

For
assistant
so where do I BEGIN
user
For teaching basic manners, it’s best to start with “Do’s and Don’ts” lists.  Here’s a list of ten basic manners you might want to teach your child:

-   - Don’t talk with your mouth full
-   - Don’t shout
-   - Say “please” and “thank you”
-   - Use a napkin
-   - Don’t interrupt
-   - Don’t run in the house
-   - Use inside voices
-   - Don’t kick the table
-   - Don’t touch people without permission
assistant
teach my child good manners at the age of three
user
Sure, what did you have in mind?
assistant
Is there sites where they can teach me to do this
user
There are many resources available online.  The Wikipedia article on "Parenting" describes several kinds of resources, like how to teach your child basic manners and table manners.  This article from Parenting is also pretty good, although it focuses more on parenting styles and different theories of child-rearing.
assistant
where can I see this
user
Here are some good starting places:

For good manners in general:
https://www.parenting.com/raising-kids/child-behavior/5-positive-habits-to-teach-your-kids-2747.html

For
assistant
so where do I BEGIN
user
It seems like the
https://www.parenting.com/raising-kids/child-behavior/5-positive-habits-to-teach-your-kids-2747.html is a good place to start.  It explains a series of habits, and you can work through them to teach your child good manners.
assistant
teach my child good manners at the age of three