I've never used anything so complicated, it's a very natural process! My babies were all out of diapers by 1 yo or so. Just change them often, since they're very young, hold them over the toilet (or sink, or bowl, or potty, anything will do) & make a hissing sound (or whatever sound they make in your country for going pee) or grunting (or whatever for #2) & very soon they get the point & you start gettign your presents in the potty & not in the diaper.
actually except for the night & outings, using cloth diapers teaches them A LOT faster (helps mom to be more disciplined as well
!)
Good luck, everyone!