My 21-month old daughter seems opposite from what I've always heard and read about "potty training". In diapers, she stays dry, and tells me when she needs to go. In panties, though, she doesn't seem to care if she pees in them. (She's pretty reliable about pooping in the potty whether she's in diaper or panties.) She will come get me and show me that she peed on the floor if she does that so I feel like she understands that pee doesn't go on the floor.
We started EC kind of by accident at 9 months, after sleeps and by timing. We never really effectively cued though I did try that.