My son is 19 am ost 20 months and is showing signs of wanting to potty train. He's brought me his potty chairs, pulls down his diaper/takes it off, gets mad when he is dirty, and climbs up on the toilet. He will sit on his potty chair for a little bit but then stands up and pees on the floor. We take him to the bathroom with us but he is our first and we are kind of at a loss on where to start.