When I started potty training my sons, and I knew they were READY, I took off the diapers. NO pullups. Pullups don't help you potty train. They are a crutch for both of you.
I used a two-prong approach. M&Ms that he NEVER got (helps if you never give her candy...) were my "stimulus package". I showed him 2 of them for just sitting down on the potty. Isn't that easy? They 5 of them for peeing in the potty. Then, oh the widened eyes when I showed him what he got for pooping in the potty! 10 of them! We counted together!
I showed the clock face and told him that every time the big hand got to the top (12), that we would go to the potty together. I did not ASK, E.. I told him that it was time to go to the potty and I expected him to come with me. I gave him some extra fluids just to help, but not overload. He was compliant in going because he knew he'd get M&Ms no matter what. I actually cannot remember if he had accidents or not, quite frankly.
I started on a Saturday morning. Daycare was also working with him to potty train, and they used stickers. If he got 3 stickers at least, per day, he would get to pick a fun little treat out of a bag (not food.) There WERE a few times that he said to them "Not right now, thank you" LOL!
It took one week to day train him. I gave him M&Ms at home for 2 weeks. One day I stopped bringing them out and stopped asking every hour, but more like every 2. One time he asked me about the M&Ms. I said to him "You don't really need them anymore to remember to go to the potty anymore, do you?" He thought about it and said no. I asked him if he would like some M&Ms and he said yes, and I told him that we'd have them for dessert after dinner. We never had to talk about M&Ms again.
Night time training is totally different and shouldn't even be attempted until he has been day trained for a good while. My ped told me that a child cannot be physically expected to train until they are at LEAST 4 years old. Some develop faster than others and can, but shouldn't be expected to.
I hope this helps.