...Something that may surprise you is that learning about the toilet
starts first with simple awareness and can begin much earlier than most
realize. To start, babies can wear cloth diapers until they are
crawling, at which point they can then use underwear instead of
disposable diapers. Why? Because when a baby is wearing a cloth diaper,
the sensation of urination is something s/he can become aware of by
feeling the wetness...
Download the full pdf file here: The Road to Potty Training is Paved with Good Intentions