This is what we did:
1) Underwear 100% (except for nap and night). Started with the plastic then graduated to more grown-up pair when she started mastering.
2) Took her to the potty every 30 minutes - 1 hour. As she got better we did not need to take her as often.
3) We talked about going potty all of the time and read books.
4) When she pushed-back and did not want to go potty. I basically gave her a choice - do you want the big potty or little potty. Meaning the adult potty or toddler potty. Also, she was not allowed to go on furniture unless she went potty first - that was always a nice incentive as well.
5) We also had a sticker chart that she loved. We showed everyone that came to our house and just overloaded her with stickers when she went in the potty.
6) Be patient and expect accidents. Do not punish them for having accidents. It is an inconvenience for you; however, they are still trying to master the technique and it takes a while.
7) Put your child in a position to succeed. Offer them the opportunity to go potty often, don't put them in front of the t.v. without having gone potty then expect them to want to get up and go, have them go potty before any fun activities, etc.
Hope this helps! Good luck.