R.R.
Sorry I don't know any videos but I read a great book called Diaper Free Before 3 by Jill Lekovic. You don't have to read it cover to cover. You can just read chapters or sections of chapters and still get a lot out of it. The book has some great ways to start early potty training.
The ideas of "readiness" isn't supported in the literature. Before the invention of disposable diapers (1960s) the average age of potty training was 18 months. Mostly because women (or child care providers) were very motivated to potty train their children instead of wash cloth diapers. Since the introduction of disposable diapers, the average age has increased to 36+ months!
Potty training takes time, patience and energy - mostly from the care provider.
Good luck!