Are you looking for best teachers who can teach your children? Who do you think is the best teacher who can teach your precious sons and daughters to think wise, speak mannerly and behave well. If you think you should go everywhere, offline or online just to find the teachers for your children, I think that won't be as good as you yourself as parents to teach them. Parents are children's best teachers. Don't you think so?
Who are the closest people around your children? If you answer other than you and you spouse (as parents), I would say that you should give yourself time to think hard about this matter. I believe that since you have come to my to read about parenting or about living, you must be someone who has at least a little concern about your children their present and their future.
You as parents are the closest and also I can say the first teachers of your children. Moreover, mothers are the first who give lessons. Fetus inside the womb of a mother can feel. Whatever infants or babies hear and see at their early young age, are deeply carved in their hearts. When they are young, whatever you are doing for others will be an example for them to follow (perhaps not right away, but when they grow up).
Setting good examples for children at very young age is really a serious matter. Don't think that it's not important about this. Then, how important is setting good examples to teach children? I can say that the importance of this will influence their whole life, and for the rest of their lives.
Give this a little thought! When you are eating at home, will you give the delicious food to your parents or your children? What's the difference? If you are serving the food to your parents (or your in-laws) first, your children are seeing this simple action. This simple action will carve deeply inside their hearts. The next day, they probably will do the same. This should be set as examples even at their young age. The following video is in Mandarin language, but by just watching I think you will also understand what it wants to tell you about teaching children.