A.S.
Hey there! I just potty trained my son in August (at 21 months old). I used the book Toilet Training in Less Than a Day and we (my son and I) loved it! We tried all the techniques in July for three days. Henry was getting all the steps but not putting them together, so I decided he was too young and waited a month. And the first day we tried it in August, he caught on. By naptime he had it down pat. We are now diaper free except at night time and nap time.
I loved the book, it was a quick easy read. It was written in the 1970's. Two pieces of advice: #1 - you don't need a doll that wets. They are expensive and we have a son who won't really play with dolls. So we used a teddy bear and a squirt bottle. I held the bottle behind the bear to "make the bear go potty" It worked fine.
And #2: Don't let other's discourage you! You know your son best and you don't want to miss the window of opportunity to potty train, lest you end up with a three or four year old in diapers. :)
Good luck! You can do it!