How do I potty train baby and how old?

Hi, You can potty train your kid when he starts sitting without support and without getting tired. Perhaps around 15 months onwards. But begin the practise of making him zit on the pot as and when he starts sitting on his own. Start with making him sit on the pot even if he doesn't poo in it, it's okay, he will atleast learn to have the patience to be on thd pot. Eventually, he will start to poo in it. All you have to do is make a set time to make him sit on the pot ech day.